I think with stiff competition even between big brands right now, I guess chances of X-Factory reliving their glory days once more with injection moulded kits is very slim.
By any small manufacturer really, by the way: Sadly enough it's hard to make a living from ingeneous design and dedication to the hobby these days. Quantity over quality is a contagious thing sweeping the (RC) industry...
Still, who knows what X-Factory are working on. We've only had a taste of the potential of 3D printing for the RC industry; not just printing parts for end use, but also to make other methods (tools/tooling for conventional production methods) cheaper. It means small teams with good ideas still stand a chance to be a step ahead of the big guys