Is anything of your work landing in any of the official ubuntu 24.x upstream or downstream?
Definitely yes, see our update from last week. I can not promise that we will get everything working until 25.04 but we are committed to take everything we learnt from the concept and merge it into our proper Ubuntu images for future releases.
In terms of downstream we try to keep our diff to mainline Linux at a minimum and make sure all changes get submitted and merged there too.