Here is a list of Rockstar games from the past decade that have been, or about to be, released on PC:
Grand Theft Auto III
The Italian Job
State of Emergency
Grand Theft Auto Vice City
Midnight Club II
Max Payne 2: The Fall of Max Payne
Grand Theft Auto San Andreas
Grand Theft Auto IV
Max Payne 3
Not counting games made specifically (or first) for a handheld, it's almost everything great the company has put its name to in the last 10 years, including all the Grand Theft Auto games and Rockstar's most recent hit, LA Noire. Here is a list of Rockstar games from the past 10 years that were released on console but have not been released on PC:
Smuggler's Run: Warzones
Midnight Club 3
Red Dead Revolver
Rockstar Games Presents Table Tennis
Midnight Club: Los Angeles
Red Dead Redemption
It's a different list. Not only is it shorter, but there are a lot of loose ends there, games that served a niche, weren't exactly smash hits.
Notice I've bolded the last entry, because it's a kick in the balls for PC fans still holding out hope 2009's finest game would see a belated release on the personal computer.
In a Q&A on Rockstar's blog, a company representative yesterday wrote the following in response to a question about a PC version of Red Dead Redemption:
We hope that with the announcement that L.A. Noire is coming to PC this fall, and the knowledge that our next big game Max Payne 3 will have a PC release (plus that we've released both Grand Theft Auto IV and the Episodes from Liberty City for PC), we can finally put to rest any misconceptions that we've ‘abandoned the PC platform'.
We do know that, yes, there is just one title absent from our PC release plans — that game of course being Red Dead Redemption, and of course we're well aware that some fans have been asking for it. 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.
That's about as gentle a "no, it's never coming to PC, stop asking" as you're going to get from somebody working in video games PR.