Aye, the fact that no official announcement has been made is telling, I think. I suspect it's more likely that MS simply doesn't _know_ if it's going to provide

Aye, the fact that no official announcement has been made is telling, I think. I suspect it's more likely that MS simply doesn't _know_ if it's going to provide a WP7>WP8 upgrade path. FWIW, WP8 is really quite different from WP7 -- as far as we know, it's based on the Windows 8 kernel, and will presumably have the same/similar Metro/WinRT app stack. It might just be that the WP7 hardware spec (which is now 2-3 years old) just won't reliably run WP8.