People, who say under 10 mln., probably haven`t watched those 2 videos above.
Watch them, then think again.

And the game is only 65% complete.

You're insane. That's at least a 60% attach rate by March.

17 is without bundling, 25 with bundles.

You're still VERY insane. 17 without bundles is just completely nuts.

GT3 sold 15 million and GT4 sold 11. Neither reached 17 on a 132 MILLION INSTALL BASE.

How will GT5 sell 17 million on a console which will be lucky to half that?

What do the videos have to do with sales?

Most likely under 10 million.

Sonys mistake was to release GT5:P (i know many ppl who think that Prolouge is the full version)
and to not release GT5 in the holiday season.
i would polish GT5 even more, make it perfect and then release it around octobre 2010, if i was sony.

Videos like these, commercials like these, will make many people to buy PS3 for Gran Turismo 5 alone.

Also, Gan Turismo graphics for the first time rivals CGI renders, that`s why after watching those video i was so optimistic about GT5 sales.

Only 10m?

Only one HD game has done that so far lol

And I think somewhere between 9-13m is where it'll land

Over 10 million, possibly 11.5 million if heavily bundled.

Off topic:

I only have one gripe. It has 2 player offline racing and I was kinda expecting 4 players. Oh well, thats only a tiny thing, the whole game will be pure perfection.