Sony may be testing a new device and if the latest findings are correct, it’s going to be an impressive device. With the model number C680x, Sony’s device will be running Android 4.2 and sporting a full HD screen with a resolution of 1920 x 1080. Due to the model number being higher than the anticipated Xperia Z, this might be an indication of yes another Sony flagship phone. Very little details are known at this point but check back with TalkAndroid for the latest reports.
source: Xperia Blog