# Cal.com v6.1.0 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v6.1.0
- **Released:** Jan 16, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v6.1.0/

## Executive Summary (TL;DR)
Cal.com v6.1.0. Source highlight: feat: Add attribute sync logic from Salesforce

## New Features
- feat: Add attribute sync logic from Salesforce
- perf: convert services to factory functions and add TypeScript project references
- feat: add completion status to Cubic AI review comments
- test: CodeRabbit Generated Unit Tests: Add unit tests for permissions hooks, registry, and traversal by @coderabbitai[bot] in https://github.com/calcom/cal.com/pull/23441
- feat: hide "Don't have an account?" button when register=false query param is set

## Improvements
- docs: improve beforeEventBuffer and afterEventBuffer descriptions in API v2

## Bug Fixes
- fix: properly await async operations in addMembersToTeams
- fix: riverside video url regexp fix
- docs: Fix Cal.com brand casing inconsistencies
- fix: rename attribute sync migration file
- fix: enhance error message handling for `EventTypeSettings` atom
- fix: Add IF NOT EXISTS to field mapping and attribute migration