# Cal.com v5.1.15 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.1.15
- **Released:** Apr 03, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.1.15/

## Executive Summary (TL;DR)
Cal.com v5.1.15. Source highlight: docs: CalProvider

## New Features
- feat: v2 return booking icsUid
- feat: max-seats-per-time-slot
- feat: options to disable cancelling and/or rescheduling
- feat: Update `@dub/analytics` to support domainsConfig.refer
- feat: get org bookings endpoint api-v2

## Bug Fixes
- fix: add oauth client id to table identifier on platform managed user list
- fix: Add to calendar feature not working properly
- fix: firstname lastname identifiers
- fix: v2 allow creating team events without hosts
- fix: keep search term on the url (DataTableToolbar.SearchBar)
- fix: don't display user event types with no owner