Metro overhaul is secondary to "useful app". In this case it's another premium app from a major vendor and great for windows phone 7 customers.

It only works for carriers who clearered MS to push the AT&T is still in the testing.

Reality check... Verizon lags in everything. The 4G ThunderBoly was delayed several weeks too and by all accounts due to iPhone.WP7 CDMA support is in it's infancy.

wp7 won't require such heavy processing power

android and wm6.5 OTOH scream for it with their poor (non-existant) app management systems.

it seems very unlikely for a v1 launch for phone makers to go "bleeding edge" and get above the $199 (on contract) smartphone cost for WP7 devices.

WP7 doubters (and hating bloggers) really underestimate and fail to comprehend the XNA platform. In addition to mass-market. This was a great move (silverlight for casual/turn games & apps) by Microsoft as it leverages xbox360 Live as well. Porting the graphical XNA game like that in 4-8 hours is impressive, especially with beta tools and changing phone APIs.