Came from one secret source on xda-developer forum, 2 sets of Xperia X2 photos are posted online with different angle of the prototype. As a successor to the Sony Ericsson first windows mobile smartphone, Xperia X1, the X2 has a similar body size compare to the X1. It will be announced in this year and use the Windows Mobile 6.5 in its production unit. The unique Xperia Panel user interface is also further developed with more features and improvements.