Just twitter #gencon to see all the news.
For example, just saw this :
"DDI folks will have 1/3 to 1/2 of #dnd PHB3 before it is published." and "PHB3 content will be 1/2 debuted before the book. New races in addition to Revenant"
"Lots of discussion of adventures for children"
"Supposed D&D videogame from Atari announcement within a year, no details yet."
"We are going to try very hard not to shoehorn 4e conceits into Dark Sun" -Bill"
"Dark Sun: "We're going back to the original box set" as far as timeline goes."
"PDFs: working on that, but no announcements yet."
"MM3 with Lolth, DMG3 in Sept. Epic level play focus"
"Revenge of the Giants, super adventure inspired by (not remake) of Against the Giants"
"DMG2 has chapter on adding story, skill challenges, paragon tier, Sigil"
"$5 PHBs sold out in an hour or so." followed by "Players handbooks back at Wizards booth" the next day.