Loads to like. Kelby takes you through the good and bad (not so much bad).

Note for beta 2 users: There are some differences and some sound very cool. Off the top of my head the gradient filter sounds very useful, Scott says:

The Gradient Filter is one of my personal favorite new features, and again; what we wanted was something that would let us replicate a traditional Neutral Density Gradient filter; what we got was something much more powerful, and goes far beyond a simple filter replacement. Very smartly done.

In addition, the adjustment brush not contains additional effects which is very cool and apparently it’s capabilities have been improved as well.

And of course he’s got a book too. And some video courses.