What’s New in Mattermost 10.6.2 and 10.6 ?

Mattermost 10.6.2 is out!

This release contains low to medium severity level security fixes. Upgrading to this release is recommended. 

• Stopped logging websocket PING events received by the server MM-63693.
• Fixed an issue with post links trapping focus when hovered or focused using the keyboard MM-62005.

Need help with upgrading Mattermost or upgrading to commercial edition? 
Our team can help you! Contact us: mattermost@almtoolbox.com

What’s new in Mattermost 10.6 (Major release)?

Mattermost 10.6 delivers critical backend enhancements and compliance-focused updates, prioritizing database performance, security, and enterprise scalability. While the release avoids flashy UI changes, it lays the groundwork for large-scale deployments and modern DevOps workflows. Below is a comprehensive breakdown of its features and implications.

Core Infrastructure Upgrades:

1. PostgreSQL 13 Mandate
   • Why It Matters: PostgreSQL 13 introduces optimizations for indexing, partitioning, and parallelized queries, reducing latency for teams with 10M+ posts.
   • Migration Impact: Existing users on PostgreSQL 11/12 must upgrade, but the process is streamlined with Mattermost’s non-locking schema migrations (downtime minimized to seconds).
2. Database Performance Tweaks
   • Query Optimization: Rewritten SQL queries for channel membership checks and message retrieval, cutting load times by 15-30% in stress-tested environments.
   • Connection Pooling: Reduced idle database connections, freeing resources for high-availability clusters.
3. Bug Fixes & Stability
   • Patch 10.6.1: Resolved edge cases in message threading and emoji reactions, ensuring smoother interactions.
   • Memory Leaks: Addressed rare crashes during bulk user imports via CSV.

Enterprise-Focused Changes:

• Playbooks v2 Licensing Shift: Advanced workflows, retrospectives, and checklists now require an Enterprise license, aligning security/compliance tools with premium tiers.
• Compliance Exports: Enhanced compatibility with eDiscovery tools like Smarsh, supporting custom metadata fields for audits.
• Session Management: Admins can enforce stricter idle session timeouts (e.g., 15 minutes) via System Console.

DevOps Ecosystem Integrations:

• GitLab 17.11 Compatibility: Full support for GitLab’s April 2025 release, including improved CI/CD pipeline notifications and merge request tracking.
• Omnibus Deployments:
  • Simplified Configuration: Single mmomni.yml file now manages NGINX, HTTPS certificates, and plugin rollouts.
  • FIPS Compliance: Linux desktop app updates (separate release) meet federal standards for cryptographic modules.
• To learn more read the release notes.

Our company can help you implement Mattermost and integrate it with 3rd-party tools (e.g. GitLab), as well as helping you choose the best edition aligned to your needs, selling licenses, providing support, managed services and more. Contact us: mattermost@almtoolbox.com

Related Links:

• Our Mattermost webpage