Thank you for the links, as I wasn't going to visit the brain dead extremetech site on my iPad.

OS X mockup: the window control traffic lights don't line up vertically with the toolbar/tab bar icons, looks jarring. The close tab button is still on the right, tab titles are still left-aligned instead of centered, not impressed.

Firefox team: stop trying to ape the Chrome UI and think for yourselves for once, put the tab bar on the left or right side.