I didn't think of that last bit that's a good point, if they make the 12.9" iPad Pro into a bigger display could they add things like more multitasking features, 3 or 4 window multitasking and or more split view tabs. If these are shown off at WWDC then they may demo such features in the new IOS.
Updated iPad Pro's with no home button and Face ID would remove a lot of the chin at the bottom and possibly up top of they slim down the bezels as well we could see a 13.5" - 14" iPad Pro. I'm looking forward to seeing what they do with this. Face ID is brilliant and deserves to be on all IOS and Mac devices.
Yea I think that's the logical next step for iOS on the iPad. I am pretty happy as is right now in my workflow, but I am always open to improvements. I agree, Face ID has been great so far and I can't wait to have it on my iPad. Getting rid of the home button is ideal as well.