josh/useragent — pull request #40 by jeremy (2012-12-05 17:58:19+00:00)
Title: Detect BB10 and report it as BlackBerry.

BlackBerry 10 intentionally changed its User-Agent. They're tired of their shiny new devices getting stuck in mobile ghettos targeting the old browser.

http://devblog.blackberry.com/2012/08/blackberry-10-user-agent-string/