# Cal.com v5.3.0 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.3.0
- **Released:** May 15, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.3.0/

## Executive Summary (TL;DR)
Cal.com v5.3.0. Source highlight: feat: Add `AssignmentReason` to `BOOKING_CREATED` webhook

## New Features
- feat: Add `AssignmentReason` to `BOOKING_CREATED` webhook
- refactor: check insights feature flag in higher stack

## Bug Fixes
- fix: sms credits follow up
- fix: add link to /help/billing-and-usage/messaging-credits
- fix: v2 token secret conflicts
- fix: unable to save workflow with verified secondary email