There have been a few blips on my radar (some good; some bad) so far, but, if I had to pick one word which sums up how I currently feel, apathy seems accurate. I still follow some of the developments, but my motivation to care is quickly waning.
Part of the reason is because -even though I sometimes like what they are saying- I don't think the designers are always speaking the same language that I am. I'm not sure I believe they understand what I liked/disliked about 3rd Edition. I find a similar statement about 4th, and what I liked/disliked about it to be especially true.
Meanwhile, they are also tossing around words like modularity, and talking about dialing parts of the game up and down. I like those concepts, but that means (in my mind) they are competing with some of the space that one of the non-D&D games I play occupies. Being that the company who makes that other game does what I feel is an excellent job of communicating with their customer base and making a modular game I want to play, WoTC has a lot of work to do to sway me. It's possible they don't want to sway me, but somehow I'm completely fine with that.