Some pretty exciting stuff popping up at Nanapho with regards to a language change on the IS12T to English and a quick run through. One of the things you'll notice is the addition of adding a WiFi network (hidden SSID), which our Daniel Rubino previously covered as being present in the RTM build of "Mango".
The device, being shown off at the KDDI Designing Studio in Harajuku Tokyo Japan, is running the build 7716. Not 7720 RTM, but close nonetheless. Noted in the article is the handset isn't running final hardware or - of course - software.
For more images, check out the article at the link below.