Rockstar games recently admitted that they have no plans to release Red Dead Redemption for the PC. The company posted a lengthy asked and answered article on their website, and one of questions related to RDR and Rockstar's other PC releases.
When asked why there are no plans to bring Red Dead to PC, the company answered, "All we can say is that whenever it is viable (technically, developmentally and business-wise) for us to release a game for PC (or any other particular platform) – we will and we usually do; unfortunately, that is just not the case 100% of the time for all platforms. To PC gamers, we hope that between the Grand Theft Auto titles, and the forthcoming L.A. Noire and Max Payne 3, you’ll have plenty of great Rockstar action to enjoy."
And there you have it. I know many Rockstar PC gamers have been waiting (somewhat impatiently) for Red Dead to make its appearance but it looks like that wait will be forever. Sorry, cowboys. The good news is that it looks like the upcoming Max Payne 3 will be coming to PC though, so that's good news, right?