Originally, as we reported, the upgrade was expected sometime in Q4. As the number of high end Android models getting upgraded to Android 2.2 starts increasing, the pressure grows on Sony Ericsson to take the Xperia X10 up to Android 2.1. This would narrow the gap in functions between the flagship unit of the joint venture and other flagship models like the Motorola DROID X and the EVO 4G. The latter is currently powered by Android 2.2 while the former is expected to be upgraded to the Froyo build sometime early next month, as we have told you.
Sony Ericsson Xperia X10 Specifications | Review (European version)