The original iPad had a 9.7" screen; it was later bumped to 10.2", and today the smallest iPad/iPad Air screen is 11".
The iPad Mini started with a 7.9" screen, bumped today to 8.5".
The iPhone Duo inner display is 7.6", there are already rumors saying a gen 2 or gen 3 might be 7.9".
It's interesting how smooth the iPhone/iPad continuum is becoming.
There's an obvious gap where the iPhone mini used to be. Please fill that gap Apple!
What isn't smooth is the separation between the iPad and iPhone teams. I'm pretty sure new things being visited on the Duo such as the split keyboard interface have already been tried on the iPad side.
This iPad mini is actually slightly smaller than the previous gen; it's just the bezels that got smaller; the device footprint didn't grow.
The outer dimensions are largely the same, it's mostly a reducing the bezel size to increase the display size.
I love this dude's "reviews" https://www.youtube.com/watch?v=aTiiZTi3aC8
when he goes "iphone small (big)" "iphone big (bigger)" and so on. He has a bunch of them.
Unlike the iPhone getting bigger, the iPad with the 9.7/10.2/11" screen is still basically the same size though. It's just the bezels getting smaller.
Quick look at the Mini dimensions also seems like it barely got bigger overall since 1st gen.