I think it rides really well. I'll admit though i have not really "ridden" too many 29'rs to really tell them apart. What I can say is mine rides well, tracks well, feels good and is pretty lively. I've ridden some fairly tight single track that has a lot of turns. 29rs like to roll and in tight single track it's harder to transition the bike back and forth. Also slow speed rolling isn't that great. probably better than most. This is somewhat nitpicking and I don't think this is particular to the new Yo's, it's 29rs in general.
It's a Fat though. Has same feels and tracking and riding characteristics as those that came before.
I would like to get a 27.5 next.