I hope so. I know many may disagree, and even though I have a rMBP, am none-the-less intrigued by the concept of better productivity on a portable tablet.
An 11" iPad with enhanced functionality (maybe iOS / OSX hybrid) would be a welcome addition for an iPad "Pro".
I agree that the naming of the 9.7" iPad to "Air" leaves many questions in our minds, and with reports of Apple testing larger screens, who knows what the future holds. Let's see...