Jelly Bean ROM for Xperia T now from Alpha

The first rumors about updating published proved to be a hoax, but Sony seems to always work hard Jellybean its flagship Xperia T (and probably other Smartphones). The company has just announced the alpha version of the ROM to someone who cannot wait, no longer starts.
To install the ROM requires a T Xperia unlocked and you have to unlock the boot loader and follow the instructions. Note that the Sony opens a boot loader prevents you from ever upgrading anything when released and is irreversible.

The Alpha version of the ROM is bad enough, however, and is only recommended for developers. Connectivity does not work like Sony or with the permission of the authorities - GSM, Bluetooth, WI-Fi, NFC and FM radio is a no-go.

In addition, the user interface is not fixed in the final Jellybean and Google Mobile services is not updated preinstalled - so no Play Store, Gmail, Google Maps, etc.)

Basically, this ROM is impossible as a daily driver and only good for developers who need to test apps using.
Sony promised to deliver by the end of March and it looks like Jellybean update will arrive on time.