I received 7.0 on Thursday, and took my S85D on a 350-mile trip from Skaneateles NY (near Syracuse) to Boston yesterday. I was incredibly impressed by the latest release. I estimate that I did about 80% of the trips "hands free", all on a single highway (I90) across NYS and MASS. The A/P was awesome, and I also grew to appreciate the new UI. I would never go back to the old UI now.
To be fair, the AutoPilot mode took a bit of getting used to...I was a bit nervous at first, and had to get the turn signal process right (see comments by others above). And OBVIOUSLY I went out of A/P mode in construction areas, or places where the lines were not clear. Also, as I was heading East early in the morning, the A/P had some difficult discerning lines as I was driving directly into the sun. But in the end, when coupled with some basic learnings and common sense, the Auto Pilot mode was just spectacular. I look forward to further improvements in the Beta in the months/years to come.
And how cool is it that - with a software update - I essentially have an entirely new car.
Thank you Tesla.