It did? Kiss code will most likely be polished if not finished soon, go ahead and wait the 2 years for Aerosmith code to evolve!!
If you're moving Kiss right now for Aerosmith, you're just putting yourself at the mercy of Stern Code development once again and will be at the back of the line!! According to Stern, Kiss will have a major update soon.
I have a Kiss LE, and I won't be getting rid of it for anything... have plenty of games to play and will wait it out. The code WILL come and it has serious potential to be awesome, the flow and shots on this game are great IMO unlike other games out there.