According to Computer and Video Games, along with 360 Monster, who both seem to have gotten their information from TheInquirer.net, Mark Rein has confirmed that a PC version of Gears of War will happen “eventually.”
This is similar to Rein’s suggestion earlier in February that the PC conversion of the game was “inevitable.”
A PC conversion is an obvious move for the game, given its popularity and its Xbox 360 platform, which Microsoft intentionally designed to be similar to the PC, from a development standpoint. 360 Monster speculates that the PC version will be released shortly before the 360 launch of recently announced Gears of War II.