Says one analyst of the move (via Reuters):
Nuance is bulking up on the mobile front so that they can have a bigger presence on the next-generation handsets. They can't just stand by and just stick to their core competency of being a voice recognition technology player on mobile.
Swype has quickly become the most popular alternative keyboard for Android and Symbian although rivals are a plenty. TouchType Ltd's SwiftKey X Keyboard, Dasur Ltd's SlideIT Keyboard, Beansoft's Thumb Keyboard and Dexilog LLC's Smart Keyboard Pro are just a few that have gained traction in the past year.
The move is also seen as a way for Nuance to acquire significant patents and create a nicer offering to OEM handset providers.