This seems to have been missed around here:

http://www.actionfigureinsider.com/main/hot-toys-reveals-joker-2-0-and-costumer-interview

Very cool update. Also includes a new "laughing" portrait and just about every weapon he used in the movie. The costume is better, unbelievably. I didn't think the original DX Joker could be improved upon but this is Hot Toys.

If only they'd take another stab at Harvey Two-Face. Far and away the weakest offering from their original Dark Knight line.

Sideshow also has a couple of exclusive accessories:

1) a box with a detonator from the end of the movie
2) Grumpy's clown mask (odd, but cool)

http://www.sideshowtoy.com/?page_id=4489&sku=9018901&ref=home_new