Not really, there was actually a good bit of scale models used in the PT, Ep. 1 in particular. And just because they're going to be using more practical effects in Ep. VII doesn't necessarily mean that there's going to be a lot of scale model work unless it's large 1:1 scale models. For most, if not all, scenes involving moving craft, esp. space craft, that involve live actors interacting directly with them will almost certainly be CG, it's just quicker, easier, and more flexible to do those scenes on the computer than you can with a scale model. With a 3D model you're no longer limited on the angles you can shoot a model at because of the rig holding the model in place or where you can place your camera or how you can move it.