Update: It looks like this is just a very good theme mimicking BlackBerry 10. If someone spots it in App World let us know! (Kudos to Bla1ze for pointing it out!)
I am not sure what to make of this video demo but it looks legit. A couple readers sent this in (one crediting OSBB but not sure where) and it looks very similar to the BlackBerry tutorial videos and demos RIM has used in the past. The video is titled BB QNX 2.0 Preview 1 which has me wondering how old it is but the date is titled as Tuesday May 29th. It also does not have some of the main UI elements RIM showed off at BlackBerry World such as the messages list. Either way it is fun to watch! Feel free to speculate in the comments.