I think I got confused by your "release channels" bit in the original comment, because I thought you were asking for distros which ship and support the Plasma LTS release, but I guess you're asking more whether we have an LTS release?

We did in fact have versions marked as LTS in the Plasma 5.x generation, but the concept never quite worked that well practice (e.g. because distros generally shipped newer versions based on user demand and didn't really adopt the LTS releases, even for their own LTS distro releases, so the benefit calculation for them was different from your expectation) and we haven't kept them for the Plasma 6.x series. You can read some background here:

https://pointieststick.com/2025/05/01/notes-from-the-graz-pl...

It might come back some day in some form, but the discussion is ongoing.

Thanks for your detailed reply.