# Cal.com v5.6.16 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.6.16
- **Released:** Sep 09, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.6.16/

## Executive Summary (TL;DR)
Cal.com v5.6.16. Source highlight: fix: platform onboarding

## New Features
- feat: update translations via @LingoDotDev
- feat: implement tiered Intercom chat system replacing Plain
- feat: update translations via @LingoDotDev

## Bug Fixes
- fix: platform onboarding
- fix: workflows attach ICS file in base64 format
- fix: guests are not adding when reschedule booking
- fix: change internal note preset team fkey to cascade
- fix: send awaiting payment email only to the current attendee seat
- fix: misaligned buttons in platform oauth client update form