CoCreate is still around. In PTC's screwed up renaming it's now called "Creo Elements Direct". Creo Direct is not decedent from CoCoreate, but is a direct modeler built off of the Proe kernel. In the long term, I think the plan is to merge Creo Elements Direct (CoCreate) into main Creo, but that's going to take some time if they intend to do it seamlessly.
Yes, it's still around and I still own a couple seats of it. I would not want to be the programmer having to integrate it into Creo Parametric. But, I hope for most of the functionality to be incorporated eventually with much more familiar tools.