I am also surprised why MS at least doesn't talk about WP7 tablet. Nobody wants Win7 tablet with desktop software, so the only option left is that Win8 will natively support tablets, but then, what about apps?
After resetting Windows Mobile development they had their hands full just getting WP7 out on phones, and it's still missing features like a decent web browser which are already pretty bad on a phone but would be crippling on a tablet. It would probably take them another year to do a reasonable port, at which point it's not that far from the release of Windows 8 anyway.
