The Knight KPX has been rumored for a while now. Personally i think the Scout V2 conversion is a dandy for the price. I would love to try one with big lead in a brush gun role.

CVA rumored a 45 LD LR or whatever a while ago too but no specs on twist were mentioned. Optima V2 and Scout V2 have similar tooling so it would not be that big of a deal to make with an existing Scout 45 V2 45/70 barrel.