It's being bundled with all PS4s in Japan, but I dont know it those will count as sales. 

I think this game will sell surprisingly well. It's one of the few games that is suitable for children. Also has a nostalgic platformer feel to it that early adopters will like.

and its 1/2 of PS4's launch exclusives, so that alone will give it some good buzz. 

1,394,291 Copies.

Don't all bundled games get counted as sales on this site? 

Bundles will count, look at Wii Sports,Knack will be the highest selling game in Japan ever!

Bundled games normally do count as a sale. I think Knack will surprise many gamers and sell approx 2 million copies, maybe more in it's lifetime. I got my copy already and can't wait to play it on my PS4.

Would've gone with 1,394,249 myself but to each his own

I think it will sell 2 million, maybe more depending on how long it is bundled in Japan. However, if this game is included in ps+ it could easily do a lot less than that.

I don't think Knack will be bundled for very long. I expect it to do about 500k in the West. Will get to a million because of bundles.

The limited japan bundle is digital so it wont be calculated here.

They give a download code for Knack

Ahhhh okay, thats very important to know!