The Cheetah12 is a Saiga style shotgun made in China and imported by SDS Imports. It is the replacement for the DDI12. Well Advanced Weapon Systems is working with SDS to get virgin receivers and barrels and is making the Trench 12. It is not a shotgun and just like the Mossberg Shockwave or the Black Aces Tactical gunsm the Trench 12 is classified as simply firearm.
According to AWS, these will be around $1200-1400. No word on when these will be available just yet. According to David Fillers of SDS Imports, these will be available through AGS Armament, Atlantic Firearms and Copper Custom.