You only do updates and not upgrade..
so only updates for 8.10
LinuxMCE is only build on top of kubuntu so there is a lot of integration between LMCE and Kubuntu.
This is not just an application running on kubuntu , but almost, no is a new OS version.
From what I understand LMCE is trying to get on a yearly release that means the next LMCE would be bases on 910. Please this is how I understand it.
There is a lot of work going into a release and Thom and the guys have been working non-stop to get 810 to beta.
Hope this helps