Though I like bells and whistles, I prefer stability and whatever features there are they should work as they are supposed to work.
I've had most of the bugs the others have been describing in the above posts, but not all in this build. Some in prior builds. (Haven't had the fan running like a leaf blower since the second or third build, sorry @mitchellvii )......at least my fan is quiet.
Oh, and I have installed firmware update 5/14/2015 every day.
Do tell. the fan for me is a constant problem