A Kmart store in Phoenix, AZ today had a new (to me) gift set featuring Batman, Green Lantern, and the Joker with a Batcopter, a small disc-firing Green Lantern vehicle, and the Joker's hammer motorcycle. The set is $24.99.
I was unable to get a picture, but you can see it on this eBay auction.
The Joker and cycle seem to be repackaged versions of the existing basic ($6) set. The Batcopter has a unique deco, with a blue window and a black body. Batman also seems to have an exclusive paint job. The Green Lantern figure looks the same as the others (there were none to compare to confirm this), but the car seems to be exclusive to this set-- so far, at least.
So 2 old pieces, 4 "new" pieces from the look of it-- good hunting!