If the Demo (Gran Turismo 5: Prolouge) sold 4 Million, and GT4 has sold a few hundred thousand this year bringing its total sales to about 10.8 Million (GT4) with the recent Hype its getting...Release near the Holiday season, Probably PS3 Bundle [especially in Europe (with slim?)] Link between GTPSP and GT5...

Halo 3 will no long be the best selling HD title.

With sales still reaching past 1 million per year, and 600k around christmas. Halo 3 will remain as the highest selling HD game for the rest of this gen.

Well of course, when GT5 gets old in like 2 years, it will get bundled in every PS3 :P.

I think it will sell alot, but your getting too ahead of yourself.

Halo also just got bundled and its about 2 years old :P

Possibly.

Depends on if it gets bundled.

Was Halo 3 ever bundled?

There's a hot debate over whether or not Gran Turismo 5 can even break 10 million. Halo 3 is about to reach that next week or so. I don't think there's any question which game will sell more.

naaaa doubt it
but future will tell

Um, how about no?

GT has never had the same attach rate that Halo has had and the Xbox 360 has a higher install base. The games still selling, that moving target of 10M won't be 10M if GT5 reaches the 10M bracket, it will be 11-12M by that time.