I tried all of the local stores, tried to get in my pre-order. But the gamer geeks with more time and less obligations usurped me! Online is still an option, but I'll probably just wait to grab it in store.
I'm very hyped about the new GTA and will be getting it for my 360. I expect pretty much the same level of added features as was present in each previous version of the game, one from the other. Single player will doubtless have a bunch of cool new features and I'm sure they'll have some sort of Live/Online/Multiplayer playability. But as usual, the single-player is bound to sell the game.
I'm stoked.