Following the seed of iOS 9.3.2 today, Apple has now released the first beta of watchOS 2.2.1. It comes a few weeks after the release of version 2.2. According to the release notes, this version brings bug fixes and other improvements. Other than that we’re not sure what’s new with this version.
To get this update, make sure that the developer profile is installed on the Apple Watch. Then, go to the Apple Watch app > Settings > General > watchOS 2.2.1.