The GNU Image Manipulation Program (GIMP) version 2.6.8 is available on GetDeb.net, even though this version is not yet available on the official website (so I cannot provide any release changes).To install Gimp 2.6.8, you can download and install THIS package which will add the GetDeb repository to your sources, or you can follow the instuctions available HERE for adding the GetDeb.net repository.
Then, simply run these commands:
sudo apt-get update && sudo apt-get upgradeIn case you were wondering, no, Gimp 2.6.8 does not come with the single-window mode.
