If I have a wheel listed as 8-10 speed Campy compatible, will a 11-speed Campagnolo cassette fit it? I seem to remember that they didn't change their standards when they moved to 11-speed, unlike Shimano and SRAM. I just don't have enough experience with Campy to say for sure. Anyone out there done this conversion and can tell me for sure?
You are correct, all Campy 11 cassettes go on all Campy 10-compatible freehubs.
Listing it as 8-10 compatible is kind of a misnomer because you have to jump through some hoops to make an 8 work on it. It would be better to call it 9-10-11. Here's a page worth bookmarking that I always refer back to to keep it straight.