MobilityDigest has uncovered this video showing the Windows Phone 7 keyboard auto-correction in action. The process appears pretty smooth, and unlike the HTC keyboard the SIP also includes auto-complete, which should help further improve typing speeds.
The second part of the video also includes adding a new word to the dictionary, a process which is pretty difficult on the iPhone, but clearly incredibly easy on Windows Phone 7.
Is there anything more our readers what from the keyboard? Let us know below.