There has been a limited number of official carrier Windows Phone 7 devices (one on T-Mobile and three on AT&T), which is why I think adoption has not been that great yet. Everyone I know that has tried this new OS has been quite pleased with it and even though it isn't perfect it is fun and fresh. Sprint has been hinting that a new phone is coming this week and all indications are that it will be the first CDMA Windows Phone 7 device, a US version of the HTC 7 Pro already available in Europe. Engadget thinks it will be called the Arrive.
THe HTC 7 Pro has a 3.6 inch 480x800 display with a large side slide QWERTY keyboard. It has all the typical WP7 specs, including a 1 GHz processor, 5 megapixel camera, internal storage (8 GB in Europe), WiFi, Bluetooth, GPS, etc. There is nothing really special about it, except for the large keyboard and the fact that it will be a CDMA variant on Sprint :)
I am interested in seeing if it launches with Sprint Navigation and other Sprint services or special apps too. Any readers looking to pick up this Sprint WP7 device?