As the lucky folks who were able to attend DroidCon 2010 witnessed, Sony Ericsson decided to distribute an early build of the LiveView developer SDK, and even loan out a couple devices to third party plug-in developers.
London-based Android developer Mark Brady was lucky enough to spend some time with a test unit, and even began porting over the UI of his Last Call Widget. In his blog he outlines exactly what you will find in the SDK, and also airs some grievances towards the early build. But he's very quick to forgive, as Sony Ericsson had no prior plans of distributing any of these units, or the unfinished SDK.
This was definitely a good move on SE's part, as the only way you're going to drum up interest in a new technology is to get it into the hands of developers, and see what they can come up with. One or two killer apps could do wonders for the LiveView, and I'm very anxious to see where this goes. I can already think of a few ways I would use the LiveView, so I'm really pulling for it.