Xbox 360 GTA V was data mined with its network files showing 1-32 players in 'Freemode', Deathmatch, Team Deathmatch, Races, and Cops & Crooks.
GTA Online takes the whole single player version of Los Santos, dumping in an online environment with persistent choices such as safe house ownership.
The report of GTA Online's more impressive 32 player support comes from "increasingly intense brush-in" with Rockstar's legal legions. The site cannot reproduce any of the code, either in actual code form or through capture images. Neither can they link to it anywhere.. They claim they've had an
Earlier data mining found that aand may in fact be the 'lead platform'. Cinema Blend speculate it would explain a few things like the technical issues the Xbox 360 and PS3 have been having, considering they might be glorified 'ports'. Internal file structures are also 'heavily PC'.
32 is a much more pleasing number than 16 for an online GTA environment; but PC and '64' would be golden. GTA Online is scheduled to launch at the beginning of October for free to owners of GTA V.