The desktop team made 2.7 release candidate 1 available earlier today. This version contains further fixes after feedback on our earlier betas.
Version 2.7 comes with a nice new menu, as you might have read in our announcement of 2.6.5 and 2.7 beta 2.
If you’d like to help test the End-to-end encryption, see this forum post.
Please also test our mobile clients and their interoperability! Test releases for the other clients with support for version 1.1 of the end-to-end encryption API are already available. Be sure to read the forum post linked above for information on how to test. Most notably, the new version is not backward compatible with earlier tech previews and you should back up your data!