LG C900 with WP7 should be coming to market around September 28th
This is in line with what AT&T was striving for. Ma Bell wants to be the first to out a WP7 device, and was gearing up its retail store promotional materials at the end of July. This usually means end of September launch for the devices, coinciding nicely with the officially announced Q4 WP7 availability. If we put two and two together, first to the US market with a Windows Phone 7 device should be LG, either with the GW910, or the C900, pictured below, both appearing on AT&T.
source: Bluetooth SIG