I'd assume that this is a constantly ongoing thing, rather than something that will ever be mentioned outright - unless they need to make specific mention of it for whatever reason. Also, it has improved quite a bit since launch (still not perfect) but I'm guessing that a lot of the changes will end up with a move to a Client Side UI, particularly since Yoshi-P seems willing to allow some kind of UI modability outside of resizing and moving things about.

I'd like to remark however, that I've had about three crashes and a few disconnects since I started playing back in September - crashes caused by me putting the graphics too high, and the disconnects by me kicking my router. Maybe I'm just lucky though...