The PC launch will take place on August 24.
'Dark Souls' was one of this year's unexpected hits and a sort of return to the whole "ruthlessly difficult but fair" design philosophy. Xbox and PlayStation owners were able to get their hands on it, but shortly after release a strongly supported petition went into effect, asking for a PC version.
That petition was heard and, as it turns out, acted upon. PC gamers looking for their fix will be able to get 'Dark Souls: Prepare to Die Edition' on August 24th. No word yet on mod support.
If you're a 'Demon's Souls' fan that hasn't yet moved on, you may be saddened to know that the online component of the game is shutting down on May 31st. You'll still be able to play the game normally, but you'll miss out on those little interactive experiences that you need to be online to enjoy.