At the moment I’m playing Resident Evil 5 on PC, so I found this interesting.
It looks as though in February and March there will be some DLC coming for the console versions of the game (Xbox 360, PS3). And on top of that, there will be a retail version called the "Gold Edition” or Resident Evil 5 Gold, which will bundle these DLC packs along with the original game, RE5. That will be coming in March too.
Unfortunately, as with most titles nowadays, neither the DLC packs nor the Gold Edition look like they’re coming to the PC – just consoles as usual.
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Resident Evil 5 'Gold Edition' Trailer Shows Off Downloadable Campaigns, Content