Xbox Achievements said:It looks like Grand Theft Auto: San Andreas is heading to Xbox 360, possibly in a remastered form and perhaps rather soon, if the emergence of the game's achievement list is an indication. It's the 10th anniversary of the Xbox and PlayStation 2 title this month, so the timing seems apt.
The achievement list has arrived on this very site - you can view it here - and points to some of the game's unique features like working out at the gym. You could also eat burgers and chicken to make protagonist CJ fat and slow, which was fun but kinda pointless.
Rockstar has yet to officially announced Grand Theft Auto: San Andreas for Xbox 360, and other platforms could also be in the pipeline. Of course, the game had been available on the Xbox Live Marketplace as an Xbox Original, but never remastered and with achievements.
Worth noting the Xbox Classics version has been pulled from Xbox Live Marketplace on Xbox 360 too.
(EDIT: And PS2 Classics too on PSN - see post below)
Game is pulled from EU PSN too (PS2 version)
Seems to be legit
(EDIT: And PC too, it seems)
There were some recent updates to the steam registry which pointed toward an updated version coming, so it would seem like it's probably hitting everywhere.
It is the game's tenth anniversary in the US on Sunday and in Europe/UK next Wednesday so...announcement in the next week?