I had held off on running the developer builds of Mountain Lion. I did install it, once, for a short period of time, though. I restrained myself because of the fact that I suspected I would run into vast numbers of incompatibilities and Apple banned me from being a Macintosh developer, so I don’t have a Mac Dev Account, only an iOS one. That would mean that I would have had to try Mountain Lion illegally, which I did do, but only for a short test period. I was wrong in doing that, yeah.
I didn’t know that Mountain Lion was going to be released to the public today. I had suspected that it would be soon due to the fact that the developers had access to the GM nearly a week ago. The GM is essentially the final build that no more changes would be made on — it’s for developers to prepare their apps, and such.