I jut got my 8.1 update. It consisted of adding favorites to the nav system that I no longer use because it's so bad if you're not using interstates. The other improvement was to add a favorites station for the streaming audio, which I don't use because my iPhone does it so much better with the services I already use. As you can tell, 8.1 didn't make a big impact on me. I had hoped there would also be some improvement to the autopilot software for HW1, like previously the improvement to radar that let it see the car ahead of the car in front of you. I'm wondering if Tesla, now that it has achieved parity of HW2 with HW1, will now abandoned any further development of HW1. Even though it was previously better than HW2, it still can use improvement. Like how it passes semis, and refinement of the algorithms for how it adjusts speed in adaptive cruise control.