# Manjaro Testing Update introduces GNOME 51, Plasma 6.8, and COSMIC 1.10.0

> **Key takeaway:** Manjaro's latest testing branch previews Manjaro 27.0 Caldonia, featuring major desktop environment updates and critical security patches.

**Published:** 2026-10-30T14:16:49+00:00 
**Source:** Manjaro Linux System Updates 
**Category:** distro-news 
**Canonical URL:** https://fosswire.org/news/manjaro-testing-update-introduces-gnome-51-plasma-68-and-cos.html 

## Summary
Manjaro Linux has released a new testing update serving as a preview for the upcoming Manjaro 27.0 Caldonia release. This update brings significant desktop environment advancements, including GNOME 51, KDE Plasma 6.8, and COSMIC 1.10.0 to the testing branch.

Beyond desktop updates, the release includes critical security patches for ca-certificates-mozilla to mitigate man-in-the-middle attacks and PHP updates to prevent remote code execution. Users are also cautioned regarding the retirement of X11 session support in Plasma 6.8 and necessary manual interventions for TPM2-based LUKS unlocking due to mkinitcpio changes.

## Technical changes and security updates
- **Desktop Environments:** Major version bumps include GNOME 51.1, KDE Plasma 6.8.2 (with KDE Frameworks 6.31.0 and Qt 6.12), and COSMIC Epoch 1.10.0.
- **Security Patches:** Updated ca-certificates-mozilla (≥ 3.131.1-1) addresses compromised eMudhra intermediate CA certificates, while PHP (≥ 8.5.12/8.3.36) patches CVE-2026-109618 and CVE-2026-109619 to prevent remote code execution.
- **Display Server Transition:** Plasma 6.8 begins retiring support for starting X11 sessions, signaling a continued shift toward Wayland-only workflows.
- **Kernel and Drivers:** The update includes NVIDIA drivers (580.196.07 / 615.78.08), Mesa 26.2.6, and support for multiple kernel series ranging from 6.1 LTS to 7.3.
- **System Maintenance:** Users with TPM2-based LUKS unlocking must re-enroll their TPM2 due to mkinitcpio >=42 changes involving the systemd-pcrosseparator.service.

## Why it matters
This update signals the transition toward modern display protocols by phasing out X11 in Plasma 6.8. It also highlights the increasing complexity of maintaining secure boot and disk encryption workflows as systemd and mkinitcpio evolve.