Published: August 7, 2012 at 11:50 PM
As noted above, Kings Dominion already has three launched coasters, and I can think of at least two other Cedar Fair parks that do as well (Knott's has Montezooma's Revenge, Xcelerator, and Pony Express, and Cedar Point has Wicked Twister, Top Thrill Dragster, and Maverick). I don't believe there is any park that currently has four launced coasters, however.
As for what it will be, it almost certainly will not be like Superman: Escape from Krypton at SFMM. That ride has a huge footprint, it is just long and not very wide. Additionally, I highly doubt Intamin AG will ever build another reverse freefall coaster. If it is a compact launched coaster, it would most likely be more along the lines of SFDK's Superman. However, I've heard elsewhere that the new attraction will not be a new coaster, and will likely be an expansion of Planet Snoopy to give Kings Dominion the most kiddie rides on the East Coast.