Just when OS X Mavericks is already just around the corner, I upgraded to OS X Mountain Lion. It turned out that Xcode 4.6.3 doesn’t support development for the iOS 7 beta 4 on my iPhone (not completely unexpected). So I downloaded Xcode 5 Developer Preview. And it turned out that it requires Mountain Lion (unexpected). So off I went upgrading. Well, upgrading is easier than easy (don’t you just love the Mac?), prettier than Lion, snappier, and I even regained a few GBs of disk space. Not bad for $20.