Man if they cut the iPhone 15 Pro out of these Siri improvements... that would suck! She needs some love on my phone. I'd also love to see Apple Maps take a huge leap forward in Canada - really want to ditch Google Maps.
Even if you don't see it now, you'd be mistyping a lot with the palm of your hand whenever you reach the top (or even middle) of the screen with your thumb. Also, for people who type a lot using both hands (not me, but a lot of people do), having the keyboard in such a low position would make it more uncomfortable to hold and more unbalanced.