Jason,
First, I believe that T/C will be swamped with orders for the ICON so the other styles of rifles may be slower in coming. Hope not, but time will tell. There is a tactical planned for sure, it will be a long range range in its own right.
As for info - the initial rifles will be push feed. They will have a bolt-lock that is released when the safety is pushed to the FIRE position. Blued steel and walnut, no idea when they will get to stainless and composites but they will happen. Tom Manners just announced a lightweight stock, plus a new tactical stock. GA Precision will have a Manners stocked ICON tactical rifle at their booth at SHOT, really looking forward to seeing it. George built it in .260 Rem. He says that "Friends don't let friends shoot .308's at 1000 yards..." - he is hooked on the smaller, faster bullets I think.
I hope to get my hands on an ICON when they start making them, have some projects planned including some hunting. The action is unique, simple, and smooth - it is considered to be a platform to be worked from. That means down the road maybe a CRF, maybe mountain rifles, tacticals, varminters, who knows. Longer action will come for sure, they will not stay with the .308 case only.
Accessories mentioned were for muzzleloaders, not aware of anything for the ICON yet. Hope that is of interest, any specific questions fire away, I can share any info I got.