So how much do you think the 3DS will sell in Japan for the rest of the year? Considering it includes the holidays, I'd assume the 3DS would sell at least 1-1.5 million units (1.5 would be pretty high imo).
Let's see, so the 3DS sold 80k this past week. If it were to sell at this pace for 7/8 weeks, it'd already be between 560-640k easily. Now if the 3DS were to sell let's say 450k in the last 2 weeks of the year (xmas and new year's), we add 290k to that baseline.
840k - 930k
I'd assume in addition, the releases of One Piece, Puzzles & Dragons Z and to a lesser extent Zelda (I'm cautiously optimistic that Japan might like this game a lot)/Mario Party could have some effect, and that it'll generally sell more than 80k a week in December. That'd could easily add 100-200k I'd say, although I could be wrong.
What else could be released...
Already announced:
Smash Bros.
Kirby Triple Deluxe
Yoshi's Island 3DS
What could they make:
Metroid (2D?)
Star Fox (unlikely)
F-Zero (unlikely)
Pokemon Sapphire/Ruby remake
Pokemon Z
another Fire Emblem
a new IP?
Third party ideas:
Monster Hunter 4 Ultimate, Bravely Default 2, Dragon Quest XI