We are facing a new batch of beta versions of Apple and in this case we reach the fourth available version of tvOS 10.2.1 and watchOS 3.2.2 for developers. This afternoon the beta of MacOS Sierra 10.12.5 and iOS 10.3.2 so we have betas for all devices. For now, the versions for users who are in the public beta program do not appear but it is a matter of time before they are released and it is expected that they will be available in the next few hours.
In these beta versions we have the typical improvements in stability, security and bug fixes about the previous beta version, but nothing is further from this. Apple has to save the news for the next version and is launching updates to the beta versions of its systems to correct the bugs that are being reported, but without notable new features in terms of functionalities.
In this case, as we have commented with the beta of macOS Sierra 10.12.5, it is best to put aside these beta versions and wait for the final version of the system when it is officially launched, since they do not provide anything new that can be "fiddled with" and therefore better staying as we are is the best option. In the case of the Apple Watch, to upload the beta version it is necessary to have the iPhone also updated, but all these versions are for developers.