I just decided to live on the edge and install one of the High Sierra betas on my MacBook Pro. Runs very nicely so far, but the App Store has informed me that it's not the latest Beta. The newest one is Beta 8, is anyone running Beta 8, and how is it running for you? Once I feel comfortable with it on the MacBook Pro, I may go ahead and patch it and toss it on the Mac Pro.
Of course, yes, I have boot drive back ups, and back ups of back ups, and back ups of back ups of back ups, so I'm really not afraid of running a Beta OS on my daily driver.