Build warnings about out of date SDK, but no updates available.

My VSC install is up to date, no updates pending in the Extensions manager etc.\

When building an app for nRF54L15DK I get a warning about the SDK being out of date, and that I should update to a specific LTS version.

Here's a screen shot of the message:

But when I go to SDK Manager and look for an update the new version (3.4.1-rc1) is not showing.

Do I need to do seomthing to see new releases?

Here's a screen recording of the process.

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