Despite the hardware launch introduced or better said to be released yesterday, Cupertino's company hasn't set up beta machines for developers and has released the final variants also called the golden king of iOS 13.4. watchOS 6.2, macOS 10.15.4 and tvOS 13.4 developers. In each of these versions the changes are decided and it can be said that we are dealing with the last types that will arrive on our devices in a week or two if all goes well in terms of performance and durability.
Apple is clear that these beta versions of the developer have become the last thing and this has been the case for a long time, so their development is based on durability and safety, there have been no major changes in the developers they are developing. Developers also do not need to be updated during the final versions after the release of GM (master version) so there are no changes to the official version that will be released soon.
Now it all depends on the race for the company to introduce new varieties but it seems that this wait won't be long. Currently users of public beta types can install this final version with OTA