Hasbro has been breathing down their necks and their getting shut down has been a very real possibility for months. I suspect they've been working on this for quite awhile.
The fact that they had a program to come back with so quickly will very likely work against them in court. HB will want ongoing revenue from this new product because it used the HB materials to build up it's user base. A sort of bait-and-switch HB will argue.