Haha what?
Let's use our brains for a second here, the game originally came out on PS3/360 on Sept. 17th 2013, the PS4/XB1 is coming out on Nov 18th 2014, and the PC version is being released in Jan. 2015 (supposedly, I'll believe it when I've got it in my hands). If you really think they have been spending all of that time optimizing you're in for a rude awakening.
Rockstar could give two shits about the PC community, the delayed release of this game is just further proof. We never got Red Dead Redemption and we're getting GTAV after a year and a half of it's original release. I bet they have the balls to try and charge $49-59.99 for it too. Sales will be garbage compared to the PS3/4 and XB360/1 which will further encourage them to either delay other games or not release titles for PC at all (ala RDR).