With the prices I can find these at I may as well wait for the the SONY SmartWatch 2. Which I believe is released early sept. And just hope it users a backward compatible sdk. It really isn't worth pay > £70 for something that will be outdated within a month or so, sorry.
None of these are the "Smartwatch 2" but "Smartwatch - 2nd generation". The "SmartWatch 2" will be 3rd generation. This video that barx posted shows the 1st and 2nd generation device.
Yes Alex, that was my understanding. The original requested lib was for the the smartwatch 2nd generation (MN2, as linked by GMan) the first being a Sony Ericsson unit (MN800). Smartwatch 2 should be released beginning of September.