Support .NET 10.0 Preview 1 scheduled for 2025-02-20

[lbussell]

.NET 10 Preview 1 is scheduled to be released on 2025-02-25. .NET Previews and release candidates are released on a monthly basis leading up to the final release which is planned for November 2025.

The .NET 10 Preview 1 SDK image will be tagged as mcr.microsoft.com/dotnet/sdk:10.0-preview-<variant>. The configuration should be the same as the .NET 8 and 9 images. The 10.0-preview tags will be updated with subsequent preview releases until around September 2025, when .NET 10 Release Candidate 1 is published.

• Open a PR
• Create a release
• Update templates (if necessary)
• Update [Tracking] Image support, deprecation / EOL dates #90
• Update Microsoft Artifact Registry docs

[lbussell]

The release was pushed back to 2025-02-25 (next Tuesday).

[lbussell]

@samruddhikhandale, @bamurtaugh, @Kaniska244 - Does the assignment mean that this is planned? And is there an ETA?

[Kaniska244]

Hello @lbussell ,

We will update you on the planning part early next week by 12th March.

With Regards,
Kaniska

[Kaniska244]

Hi @lbussell ,

I checked further on this one. As per the history of devcontainers, we are supporting the new dotnet version once the go-live release is done. I don't think as of now we support the preview versions. For e.g. devcontainer dotnet image started supporting dotnet 9 after first go-live version 9.0.0-rc.1 was released. Also devcontainer is using bookworm-slim sdk image variant from MCR repo as the base image right now which I believe is yet to be published for dotnet 10 preview-1 version.

Kindly let me know in case of any further concern.

With Regards,
Kaniska

[lbussell]

What's the main concern with supporting the preview releases? The update frequency is the same as go-live versions of .NET (monthly). mcr.microsoft.com/dotnet/sdk:10.0-preview is available now (contains Preview 1) and will be updated as new previews are released.

The reason you don't see Bookworm is because the Debian version for .NET 10 was updated to Trixie (Debian 13): https://github.com/dotnet/core/blob/main/release-notes/10.0/preview/preview1/containers.md#debian-images-use-debian-13-trixie

[Kaniska244]

Hello @lbussell ,

We are working on it. I will update you on the planning shortly.

With Regards,
Kaniska

[Kaniska244]

Hello @lbussell ,

The following dev tags for dotnet 10 perview version of devcontainer dotnet image are released Yesterday 31/03. Would you kindly verify if they appear fine for you. Accordingly we will plan for the prod release for the same.

mcr.microsoft.com/devcontainers/dotnet:dev-10.0-preview-trixie-slim
mcr.microsoft.com/devcontainers/dotnet:dev-10.0-preview
mcr.microsoft.com/devcontainers/dotnet:dev-10.0-preview-trixie
mcr.microsoft.com/devcontainers/dotnet:dev-10.0-preview-noble

Please do let me know in case of any further concern with the same.

With Regards,
Kaniska

[lbussell]

@Kaniska244 - I tried out mcr.microsoft.com/devcontainers/dotnet:dev-10.0-preview and it looks good to me!