I think the idea is that the cssu-enabler should ultimately be moved to extras, and at that point it would be a release for all users.

The question is what the timeframe for 'ultimately' is.

I upgraded to CSSU about two weeks ago, and it is really quite good, and I think good enough to go to extras.

However, I don't know if recent fixes in git (fixing portrait backgrounds) might be worthwhile having in the first generally available cssu.