# Cal.com v5.8.13 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.8.13
- **Released:** Nov 14, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.8.13/

## Executive Summary (TL;DR)
Cal.com v5.8.13. Source highlight: fix: back button in settings updated to use window history

## New Features
- test: add routing-forms tests
- feat: v2 api allow switching event type between collective and round robin
- chore: Add calendar weekly view enhancements and welcome modal feature
- feat: add booking details sheet for /bookings
- feat: cal.ai form triggers #4
- feat: Add delegation credential error webhook trigger

## Improvements
- perf: Improve check user exists
- perf: Use Stripe singleton in StripeBillingService

## Bug Fixes
- fix: back button in settings updated to use window history
- fix: configure correct error message for duplicate event type slug
- fix(apps/web): enhance JWT response with token type and expiration details
- fix: strip internal $RCH$ prefix from cancellation reason in ICS files
- fix: Org Admin not able to access their regular(non-subteam) team's event
- fix: resolve flaky integration tests