Safe to say GTA V won't be on it. I don't think Rockstar has ever done promos with GPU manufacturers before.
If you don't mind me asking, what games are you getting? Looking at the Gold tier (had to look it up because I can't remember all of them), there's some pretty legit games on there. Saints Row IV, Tomb Raider, and Sleeping Dogs would easily be my top picks. (I would say get Deus Ex, but that one's old and cheap enough that you're better off just buying it on sale).
Far Cry 3 I know is popular (it's an OK open-world FPS, not a huge fan of it though). Hitman is good too.
I guess it doesn't hurt wait if you want. Just make sure you don't wait too long and your coupon expires.

But I don't know what else AMD has in the works in terms of free games, and it's already October, so the end of the year is coming up quickly. Just saying there's a good chance they're probably not adding anything.