... and to my bewilderment I like it. It seems D&D is going to its roots,or maybe that's just my impression. The way skills are handled is very much to my likings. Backgrounds and themes seem to be nice additions, however, I hope they will have a very different feel from each other.
I think I also like magic system, It's easy and neat. That's all I can say. I hope It won't change much in the final version. As for combat rules, I like them very much, easy and straightforward. I love the advantage/disadvantage rules! No fiddly modifiers just roll two d20s and choose higher/lower score, really elegant and stylish.
The one thing I don't like, or well, hate is the way saving throws are handled. I prefer 3.x Fort/Ref/Will or Swords & Wizardry way.