In an older post we wrote about the question we send to different manufacturer of smartwatches. Up to now, the only promising answer was by Metawatch. They provided us with informations on how we could built a Ubuntu Phone App. A Metawatch testing device already arrived, and we can start building a prototype.
In the prerelease versions of Ubuntu Touch Bluetooth 4 was not supported and we could not pair
the Metawatch. In the next weeks plans will be made which functionality will be implemented for the 14.04 release. Maybe the Bluetooth 4 functionality will be added by an update to 13.10. Stay tuned!