Someone would need to verify that. My iPad Pro does NOT fit in the iPad pocket of my North Face bag (not a big deal, I just put it outside that pocket). The iPP is quite a but larger than a normal iPad.
If I ever buy an iPad Pro, I'll be sure to check it out in my Osprey backpack and let people here know whether or not it fits. I know it is quite a bit larger than my iPad Air 2, but the space allotted for the iPad is rather roomy when my iPad Air 2 is in it. Definitely someone who were interested in this particular backpack should take their device with them to the store to try out what they want to put into it before making the purchase.