Lots of mixed opinions on this. Some love it, some hate it, others like parts of it but think it has too many issues to be a GM. Quick show of hands - what do you think? Personally, I love some of the features. I think this is an amazing OS. It's just a long way from being what I would call release quality. I know there are going to be point updates, but this creates a very, very poor first impression. They've also followed the FCPX route by changing lots of workflows with little or no documentation. It's Apple's worst release IMO, but it's a pretty good product underneath.