I already have Mac devices, and so far haven't learned anything new than I already did know. I try hard to keep updated.
I do like that I will be able to use the iPad to take video of our kids playing. They need to watch themselves in real time to understand what problems they might be having with bow placement and hearing items. Then as soon as they see that, I can move straight to a youtube of a professional orchestra performing the same piece so they can see what they do as well.