How to update gtk-3.4 themes to the new gtk-3.6
Is it too complicated to achieve? if it's not could you tell me how, please. I have some basic knowledge about gtk and css. Also, is this going to continue happening each time gnome releases a new version?
For this (with custom WARNINGs !) you need add Gnome Testing PPA and update your system:
sudo add-apt-repository ppa:ricotz/testing
sudo apt-get update
sudo apt-get upgrade