Indeed.
I'll be around the local game store of my area (ManaWerx in Phoenix AZ) on November 3rd to run or play D&D, assuming enough other people show up for the games.
Didn't see anyone else around besides my own group on Free RPG Day, but maybe there'll be a bigger turnout for the Worldwide D&D Gameday. If nothing else we'll just run our usual game if no one else is around, since the 3rd is a Saturday, and that's one of the two days we already have a campaign going.