From Aspen to Zurich: A comprehensive reference for release history, upgrade best practices, and troubleshooting common problems
26
Named Releases (A-Z)
2x
Major Releases Per Year
N-1
Support Policy
2026
Country Names Begin
1
Release Naming Convention & History
ServiceNow follows a unique naming convention for its platform releases. According to the official ServiceNow community documentation, all releases are named alphabetically after famous cities around the world, starting with the letter A.
Aspen was the first city-named ServiceNow version released in 2011, and this tradition has continued through 26 releases up to Zurich in 2025. After Zurich completes the alphabet, ServiceNow will transition to using country names starting with Australia in 2026.
Key Insight: ServiceNow plans release dates up to three years ahead and notifies clients of exact release dates upfront, allowing organizations to plan their upgrade strategies well in advance.
Release Cadence
ServiceNow maintains a consistent release schedule:
Two major releases per year: Typically in Q2 and Q4
Service packs: Follow major releases to address early issues
Store updates: Ongoing updates between major releases
N (Current Release): Fully supported with patches and updates
N-1 (Previous Release): Supported until the next major release
Older versions: No longer receive patches or security updates
Warning: Running unsupported versions exposes your organization to security vulnerabilities and lack of patches. Always plan upgrades to stay within the N-1 support window.
2
Complete Release Timeline (2011-2025)
Here is the complete history of ServiceNow releases based on official ServiceNow documentation:
Expanded GenAI capabilities, enhanced developer tools, and improved automation workflows
Q3 2024
Xanadu
Biggest AI release with Agentic AI, RaptorDB Pro database (53% faster), Now Assist Skill Kit
Q2 2025
Yokohama
AI Agent Orchestrator, AI Agent Studio, 50+ AI agent integrations, AI Governance app
Q4 2025
Zurich (Final City)
Advanced AI-driven analytics, cross-platform integrations, final alphabetical release
Q2 2026
Australia (First Country)
Beginning of country-named releases, expected continued AI advancement
Q4 2026
Brazil
Second country-named release in the new naming convention
Future Outlook: After exhausting the alphabet with Zurich, ServiceNow will transition to country names. The pattern suggests Chile could follow for 2027, continuing the tradition of memorable, globally-recognized names.
4
Xanadu Release Highlights (September 2024)
The Xanadu release, announced on September 10, 2024, represents ServiceNow's biggest AI release to date. According to the official ServiceNow press release, it features actionable AI innovations across the platform.
Key Features
1. Agentic AI
The main attraction is Agentic Artificial Intelligence, which operates with a higher degree of autonomy than traditional AI. Unlike simple question-answering systems, Agentic AI can take initiative without relying solely on human-generated prompts.
2. Now Assist Skill Kit
Enables customers and partners to build, test, configure, and publish custom GenAI skills and prompts. Organizations can assign custom skills to AI Agents for handling manual tasks.
3. RaptorDB Pro
ServiceNow's next-generation database offering:
53% improvement in general transaction times
27x faster execution of queries and analysis
Designed for unprecedented speed and scalability
4. ServiceNow IDE
New integrated development environment for Visual Studio developers, accelerating application development on the Now Platform.
5. Data Visualization Generation
The first analytics skill makes it easy to get information about data without deep knowledge of data sources. Users can dynamically generate chart types and add visualizations to existing dashboards.
6. Microsoft Copilot Integration
The integration brings Copilot for Microsoft 365 to ServiceNow customers, enabling unified experiences between Now Assist and Microsoft Copilot.
7. Security Operations Enhancements
Now Assist for Security Operations allows analysts to summarize security incidents with context on threat and impact, significantly reducing mean-time-to-contain.
Industry Solutions: Xanadu includes purpose-built GenAI capabilities for telecommunications, media, technology, financial services, and public sector organizations.
5
Yokohama Release Features (March 2025)
Released on March 12, 2025 (with early availability on January 30), the Yokohama release focuses on AI agent orchestration and governance. According to ServiceNow's official Yokohama blog, it makes embedding AI where work happens easier than ever.
AI Agent Orchestrator
Described as a "master brain" and "AI agent control tower," the AI Agent Orchestrator coordinates AI agents across multiple functions and workflows. As covered in Constellation Research's analysis, it understands everything about the ServiceNow platform and every incident ever generated.
AI Agent Studio
Now available with enhanced capabilities:
Guided instructions for configuring new AI agents using natural language
Built-in guardrails, workflows, and tools
Optimized onboarding and monitoring
AI Governance Application
A centralized workspace for AI Stewards featuring:
AI Inventory: Unified AI asset data model
Privacy management: Bias and toxic content risk controls
Compliance oversight: Governance business processes
50+ New AI Agent Integrations
According to Diginomica's coverage, specialized AI agents are now available for SecOps, change management, IT, CRM, HR, and more - capable of autonomously handling tasks with minimal human intervention.
Now Assist Enhancements
AI Search with Genius Results: Improved incident deflection with actionable suggestions
Voice Input: Greater accessibility across the platform
Content Studio and Creator: Faster content generation
Internal Results
ServiceNow's internal AI agent usage shows impressive results:
80% improvement in case deflection rates
99% faster answers to seller questions vs. request tickets
20% productivity increase across HR and IT support
New Licensing Model: Yokohama is the first release under ServiceNow's hybrid pricing model that includes AI agents in Pro Plus and Enterprise Plus licenses. Enterprises can use AI agents without additional charges up to a limit, with consumption charges after that.
6
How ServiceNow Upgrades Work
A ServiceNow upgrade migrates your instance to a newer version of the platform. According to FlyForm's complete upgrade guide, this includes updates to the underlying infrastructure, database schema, and application code.
Upgrade Components
Platform Infrastructure: Core system updates and security patches
Database Schema: New tables, fields, and relationships
Application Code: Updates to built-in applications
New Features: Functionality introduced in the release
Bug Fixes: Resolution of known issues
Upgrade Process Flow
# Typical upgrade sequence
1. Clone Production → Sub-production instances
2. Upgrade DEV instance first
3. Review and resolve skipped records
4. Run ATF tests for regression testing
5. Upgrade TEST instance
6. Conduct User Acceptance Testing (UAT)
7. Upgrade PRE-PROD for final validation
8. Schedule Production upgrade window
9. Execute Production upgrade
10. Post-upgrade validation and monitoring
ServiceNow Upgrade Center
The Upgrade Center runs on the Now Platform and simplifies how you preview, assess, and monitor upgrades. Key features include:
Preview: See potential impacts before upgrading
Upgrade Plans: Reduce upgrade time with structured planning
Monitoring: Track progress and issues during upgrade
Understanding Skipped Records
Skipped records occur when customized Out-of-the-Box (OOB) records conflict with updates in the new release. As explained in the ServiceNow developer blog on reducing skipped records, ServiceNow "skips" these records to preserve your customizations.
// Skipped Record Resolution Options
// Option 1: Retain Customization
// Do nothing - your custom version is preserved
// Option 2: Revert to Base System
// Accept ServiceNow's new version, lose customization
// Option 3: Merge Changes
// Combine base system changes with your customizations
// Use "Resolve Conflicts" to compare and merge
MID Server Auto-Upgrade
When an instance is upgraded, MID Servers pointing to that instance automatically attempt to upgrade to the same version. The MID Server pre-upgrade readiness checklist recommends validating 1-2 weeks before scheduled upgrades.
Wait 30 days after general availability for stability
Consider waiting for first service pack to avoid early issues
Patch 2 adoption provides even better stability
3. Instance Upgrade Sequence
Instance Type
Recommended Time
Activities
Development (DEV)
1-2 weeks
Initial upgrade, skipped record review
Test (TEST)
1-2 weeks
ATF testing, functional validation
Pre-Production (UAT)
2-3 weeks
User acceptance testing, final validation
Production (PROD)
1 week
Upgrade execution, stabilization
4. Clone Before Upgrading
Always clone production to sub-production instances before upgrades. This ensures consistency across environments and reduces surprises when upgrading production.
5. Communication Strategy
Before: Inform stakeholders about schedule, process, and impact
During: Provide status updates on progress
After: Notify users about new features and changes
Service Account Permissions: Account lacks permission to restart services
LocalSystem account: Don't run MID Server as LocalSystem
PowerShell Execution Policy: Can cause "null (vnull)" capabilities
Insufficient resources: Need minimum 10GB disk space, 4GB RAM
# MID Server Pre-Upgrade Checklist
1. Verify service account has admin permissions
2. Check disk space: minimum 10GB free
3. Verify RAM: minimum 4GB available
4. Test PowerShell execution policy
5. Ensure not running as LocalSystem
6. Run validation 1-2 weeks before upgrade
Key practices for effective ATF testing during upgrades:
Before Upgrade
Create comprehensive test suites for each module
Run baseline tests to establish expected results
Document any known failures or exceptions
After Upgrade
Run the same test suites to capture regressions
Compare results against baseline
Investigate any new failures
Test Organization Tips
// ATF Test Suite Organization
// 1. Group tests by business process
Test Suite: Incident Management
├── Test: Create Incident
├── Test: Assign Incident
├── Test: Resolve Incident
└── Test: Close Incident
// 2. Use meaningful naming conventions
Pattern: [Module]_[Feature]_[Action]
Example: ITSM_Incident_CreateFromPortal
// 3. Build reusable test steps
// Avoid repeating UI tests - use server-side steps instead
Environment Considerations
Critical Warning: ATF tests should ONLY be run in sub-production environments. Running ATF in production can modify records and cause outages. The ATF Test Generator and Cloud Runner should NOT be installed in production.
Recommended ATF configuration for production:
Install ATF plugin but disable via properties
Disable test cases and suites
Prevents accidental execution after cloning
Quick Start Tests
ServiceNow provides over 600 pre-built Quick Start Tests that validate core functionalities after upgrades. Use these to quickly identify potential issues before they impact your live environment.
Parallel Test Execution
Run tests that create their own data to prevent conflicts
Mark dependent tests as mutually exclusive
Reduces overall testing time significantly
What NOT to Use ATF For
Load testing: ATF is not designed for performance testing
Frequently changing features: Wait until features stabilize
Production environment: Never run ATF in production
Key Takeaways
ServiceNow's release cycle and upgrade process can be complex, but following best practices ensures smooth transitions:
Stay within N-1 support: Never fall more than one version behind
Plan thoroughly: Review release notes and allocate sufficient time
Follow the sequence: DEV → TEST → UAT → PROD
Clone before upgrading: Maintain consistency across instances
Use ATF: Automated testing reduces risk and effort by 90%
Communicate: Keep stakeholders informed throughout
Document everything: Track customizations and upgrade decisions
With the transition from city names (ending with Zurich) to country names (starting with Australia in 2026), ServiceNow continues to evolve while maintaining its commitment to innovation, particularly in AI-driven capabilities with features like AI Agent Orchestrator and the AI Governance application.
Final Tip: Treat upgrades as an opportunity to clean up technical debt, retire outdated customizations, and adopt new platform capabilities that can transform your organization's workflows.