I'm in the complete opposite boat to siberys
I'll buy the books, if what they promise is true. It promises to be fun combat instead of stale and annoying
I've played SAGA, I've played with major houserules in 3.5, and just the fact that SAGA is so fun and fast as opposed to the 3.5 and houserules is pretty much a cincher.
If WotC delivers, it will be a far better game than 3.5 just in terms of accessibility and playability IMHO. However there will eventually be tons of rules, and to that I kind of like D&D Insider that they promise (just to compile all the rules in 1 place.)
And they've said there will be an OGL-version of 4E, though whether they will post an SRD or not is anybodys guess.