2012-04-09 08:55 PM
There is no proper dock, such as the Xperia P dock. However the Sony ERICSSON livedock mentioned by uliwooly should do.
Note: Sony may bring out a follow up to the live dock this year to accompany the 2012 phones - I am waiting for that.
If your looking for a speaker dock take a look at this android dock from Philips:
2012-04-09 10:32 PM
The Xperia S has the mini USB port on one side and the HDMI on the other. Therefore there can't be a formal dock, unlike the Xperia P which has both its ports on the same side. My suggestion would be to have a conventional usb dock and then use the hdmi output as you normaly would, it'll be on the top so should connect easily to your tv. Check out this video: