Latest Prism 1 user agents:

User Agent	Platform	Device
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.13) Gecko/20101206 Prism/1.0b3	GNU/Linux	Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100402 Prism/1.0b4	Mac 10	Unknown