The Sony Xperia T and Xperia TX flagships will each get their own TV Docks. The docking stations act as a MHL to HDMI adaptor and will come with a full-sized HDMI output to connect to a television. It will also have one micro-USB port to connect an accessory.
Each docking station is a perfect fit for the respective phones and has RCP to CEC translation, which allows you to use your TV remote to control the phone (as long as your TV is HDMI-CEC compatible). The dock will, of course, also charge your phone whilst you have it connected.