I'm running the regular Gnome3 PPA. I ran into a new issue which has me thinking about rolling back to 3.6, at least on my work system.
I also have yet to see a battery indicator on any laptop running Ubuntu GNOME 13.04 that I've installed to (total of about 5 laptops of different models).
There's also a 2nd bug that I ran into on my home install when I was trying to add a printer.
Other than that I'm loving 3.8.