# Cal.com v4.8.9 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v4.8.9
- **Released:** Dec 27, 2024
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v4.8.9/

## Executive Summary (TL;DR)
Cal.com v4.8.9. Source highlight: fix: plain chat removed from mobile devices

## Improvements
- perf: /router endpoint perf improvement
- perf: getAvailableSlots improvements - 1

## Bug Fixes
- fix: plain chat removed from mobile devices
- fix: Route Builder field input looses focus on typing