Linux Mint 13 comes with pre-installed GIMP 2.6. After a long wait, GIMP 2.8 was released with many new and improved features. It introduced optional single window mode that you can toggle between multi-window mode and single window mode by just one click form top menu.
Similar to Adobe Photoshop, the different layers are grouped into tree which makes it easier to organize. Unlike GIMP 2.6, the enhanced text tools in GIMP 2.8 allows you to add and edit text to your image from canvas itself without launching a separate window.
In GIMP 2.8, the saving and export features has slightly changed. Now, images are saved in it’s default file format, XCF only. To save any image in different format, you have to first export it and then choose the file extension.
To install GIMP 2.8 on Linux Mint 13, open the command terminal (Ctrl+Alt+T) and type the following command :
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gimp
sudo apt-get install gimp-plugin-registry
Now, you can see the GIMP 2.8 in your application directory ready to be launched. If you still find the old version of GIMP in your system then first try to remove it by the following command and then try to install the latest version as mentioned above :
sudo apt-get remove gimp