Not satisfied by the currently available mobile OS options? Tizen could be your next option, and Samsung just took the wraps off of a prototype device (possibly the GT-I9500 we'd heard about) at the currently ongoing developer's conference in San Francisco. As seen above in still photos taken by Tizen Talk, the developer unit running Tizen 1.0 features a 4.3-inch screen and reportedly contains a dual-core 1.2GHz CPU. There are more details revealed in a seven minute video posted by
