I got 8.0 on Monday, then went up to Tahoe for a few days starting Tuesday. For me 8.0 is a noticeable improvement in AP. Driving around the lake, on 28 between Incline Village and the junction with 50 (somewhat twisty two lane well marked highway), it consistently kept in its lane while maintaining appropriate speed and distance (slowing for sharp curves was much better). Once or twice it pulled to the right for no apparent reason and I overrode it. I also overrode it once while passing bicyclists where I wanted to give them more room that it was going to (requiring that I drive over the center double yellow).
There were a couple of places with construction and a single lane with flagmen. Once it got lucky and handled it all on its own! The time where the lane was demarcated by pylons and was right on top of double yellow lines it didn't handle at all -- I'm not certain because I overrode it but I think it would have just driven into the pylons. It also did not recognize the orange placards with construction speed limits specified even though they looked sort of like regular speed limit signs (albeit misplaced and the wrong color).
In addition there were many miles of highway driving on 80, and 395, all of which went pretty well. I visited three new to me superchargers (Reno, Gardnerville, and Folsom - Palladio).
Also, heading up there on Tuesday, there was an interesting situation using AP on 880 somewhere near Oakland. There was a car disabled/parked half into the #1 lane by the center barrier. There was moderate traffic; we were in the #1 lane; but my wife was driving so I can't give exact details. Apparently the AP reacted to slow us before she did. The situation was disturbingly similar to
this Tesla fatality in China where a streetsweeper was hit. It was reassuring that the AP was clearly taking action.
I'm very much looking forward to trying it over 17 to Santa Cruz soon, where it has never been able to go more than a few seconds without scaring me into taking back control. As things stand I think AP is making slow steady progress. It is nowhere near universal autonomy and it's pretty clear it never will be without better sensors. But it's impressive for what it is and I'm quite happy to be experimenting with it.