John Siracusa at Ars Technica has published a lengthy and detailed review of OS X 10.8 Mountain Lion. (Lengthy enough that the review garnered a review of its own.) Siracusa methodically goes through all of the changes in the new version, covering everything from the minor new features to the overarching goals. Quoting: "Despite the oft-cited prediction that Mac will eventually be subsumed by iOS, that's not what's happening here. Apple is determined to bring the benefits of iOS to the Mac, but it's equally determined to do so in a way that preserves the strengths of the Mac platform. Where we Mac nerds go wrong is in mistaking traditions for strengths. Loss aversion is alive and well in the Mac community; with each 'feature' removed and each decision point eliminated from our favorite OS, our tendency is to focus heavily on what's been lost, sometimes blinding ourselves to the gains. But the larger problem is that losses and gains are context-dependent. A person who never uses a feature will not miss it when it's gone. We all pay lip service to the idea that most users never change the default settings in software, but we rarely follow this through to its logical conclusion. The fact is, we are not the center of the market, and haven't been for a long time. Three decades ago, the personal computer industry was built on the backs of technology enthusiasts. Every product, every ad was created to please us. No longer. Technology must now work for everyone, not just 'computing enthusiasts.'" A somewhat briefer review is available at ComputerWorld, and there's a quick one from John Gruber.