# Cal.com v4.6.6 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v4.6.6
- **Released:** Oct 20, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v4.6.6/

## Executive Summary (TL;DR)
Cal.com v4.6.6. Source highlight: feat: Rerouting a booking with corrected responses

## New Features
- feat: Rerouting a booking with corrected responses

## Improvements
- perf: Increase vCPU for slots and routing forms
- perf: Single query user enrichment calls by array of userIds instead
- perf: duplicate getSchedule request

## Bug Fixes
- fix: Add troubleshooting data and ensure no errors in live mode of router.
- fix: allow gCal installs without a primary calendar
- fix(a11y): text color contrast