Yes, we had a lengthy and highly successful beta test. Testers reported that the change was a bit disorienting at first, but that once they grew accustomed to the new navigation it was not a barrier to usage, especially with the improved searchability on the left nav.
I sincerely feel the pain of users who are struggling to get accustomed to the new navigation. All I can say is that we are working toward additional improvements to how you access and share data that will make it much easier for users (particularly those who don't use Adobe Analytics every day) to get the insights they need.
I was in the beta, and as Ben mentioned, it was a bit jarring at first. But now, I like it better than old way. Combined with the search enhancement, it's even better.