Pretty interesting. No longer do you have to have a developer account. I hope this is restricted to later more stable builds. Personally, I don’t install anything but final releases on what I laughingly call my production systems. My wife, of course, is still on Mountain Lion because she likes to murder me in my sleep when I change her MacBook too much.
Hopefully this will be a positive change and even make final releases more solid and not just an opportunity to grouse about things people don’t like or how an early release deleted all their kitty gifs #applefail.