http://2buntu.com/1267/how-to-install-qt-50-on-ubuntu-1210/ Now, the next question becomes... how do we install this in Ubuntu since the latest version in the Quantal repositories is 4.8.3? I'm glad you asked. Sadly, I have been unable to find a PPA with the final released version of Qt 5.0. So we will have to build it ourselves. Warning: you need a lot of disk space. Just the source code alone ..