Can anyone show me a list/video of new useful features in mavericks? Except for tabs in Finder it all seems pretty similar...
Most of the changes are under the hood performance enhancements. Better memory management, opengl 4.1 support, hardware accelerated responsive smooth-scrolling etc... Apple has a pretty detailed overview of everything that's new here: http://www.apple.com/osx/whats-new/features.html