I know it seems lazy, but it's not. I've been an absolute lover of Ubuntu and gnu/linux for a lot of years. But then I switched to OSX.<p>Now, I am wondering how much and what way are Ubuntu and other open source OSes improved in the last 3 years?
Well I'm not going to say "improvement", but as far as new, they are attempting to replace X11 with something call Mir - <a href="https://wiki.ubuntu.com/Mir/Spec" rel="nofollow">https://wiki.ubuntu.com/Mir/Spec</a>