sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update && sudo apt-get install gimp
reference: http://www.omgubuntu.co.uk/2014/08/whats-new-in-gimp-2-8-12-plus-install-ubuntu
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update && sudo apt-get install gimp
reference: http://www.omgubuntu.co.uk/2014/08/whats-new-in-gimp-2-8-12-plus-install-ubuntu