The OP url is currently dead, but in general I think Google IO has been very promising for developer. I remember last year sitting through a large part of the key note that covered a very broken Google TV demo and also a large enterprise apps segment (yawn).

Google is doubling down on Android (today at least) I'm really excited about it. New combined smartphone and tablet OS, open source hardware accessories program, new devices etc. I'm really excited for the dev opportunities here compared to the iOS stack.