Yep this year's E3 Floor Plans are up. Nintendo and Sony are both in the west hall while Microsoft is in the South Hall where all the big publishers are. And that makes since when you consider this year Microsoft will be announcing a storm of games.
From what I know, Sony will be showing off some games behind closed doors running on PS3 Dev Kits. And Nintendo will show off what they hope to release in Japan later this year.
The one to watch will be Microsoft has even now 75% of what income most developers make from multiplatform titles comes from the PS2 (it's probably because of the amount of PS2 owners). Microsoft has to change this otherwise getting support from publishers in the long-run will be very hard.