Releases — RATATOSK

Confidential Containersv0.19.0SecurityMar 30, 2026

A release that narrows supported environments and installation paths while adding storage, attestation, GPU, API, signature, and image-handling capabilities. It also updates guest and image handling, including sealed-secret signatures, cosign signatures with newlines, in-memory LUKS headers, and improved Vault/OpenBao support.

Check if affected (5)

breakingGo support in CDH removed
Applies if you use CDH.
Go support in CDH is removed in this release.
breakingCanonical TDX Tech preview support removed
Applies if you use Canonical TDX Tech preview.
The [Canonical TDX Tech preview](https://github.com/canonical/tdx) is no longer supported in this release.
breakingUbuntu version requirement
Applies if you use Ubuntu 24.04.4 (linux-image-generic-hwe-24.04) or 25.10.
Ubuntu 24.04.4 with linux-image-generic-hwe-24.04 or Ubuntu 25.10 must be used.
+ 2 more on the release page

Plan ahead (1)

deprecatedpacker images support, planned for removalremoval date not announced
Applies if you use packer images.
Support for packer images will be dropped in some future release.

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