It'll run on Android 2.2 when it goes on sale mid-March with the NTT Docomo carrier, and will no doubt be a hit with Japanese girls (and slender businessmen who don't want to ruin the line of their suits.)
It's just 7.7mm thick, which topples the Samsung Galaxy S II from its pedestal—not a mean feat, you could say, when it only measured 8.49mm anyway. Other components that have been crammed into the 105g body include a 4-inch Gorilla Glass LCD screen with 854 x 480 resolution; a 5.1MP camera; 1Seg TV tuner; NFC tech, and the usual other sensors and connections.
Live outside of Japan? It's back to the Galaxy S II for you. [MobileCrunch]