The X8 runs Android 1.6, and is powered by a 600MHz CPU. The device is said to be updated to Android 2.1 after the X10 line has first been updated. As it is the budget member of the family, the camera is reduced to 3.2MP, compared with 8.1MP (X10) and 5MP (X10 mini). The battery also provides a relatively brief talk-time of only 4.75 hours.
While the specs of the Xperia X8 aren't terribly impressive, the form factor definitely compensates. As with all Sony Ericsson devices, it is very attractive, perhaps distracting from the aging version of Android.
Take a gander at the Sony Ericsson promo video below, and check out PhoneArena's Sony Ericsson Xperia X8 preview.
source: Sony Ericsson via Engadget