Popular Mac, Linux and Windows image editing app GIMP has been updated to version 2.8. This latest version overhauls the UI to offer a new single window mode that lets users edit images, choose tools and set up docks all within one window. Earlier versions of GIMP had multiple windows for tool sets and images, which was confusing for some users accustomed to a single window work environment. If you like the multiple window paradigm, don't worry as GIMP lets you choose between multiple or single window mode.
Besides a new UI, GIMP 2.8 lets you setup multiple column dock windows, edit text on the canvas and group layers. It also streamlined the saving and exporting of images. You can read the full list of changes, which includes many smaller tweaks, in the release notes for version 2.8.
The GIMP 2.8 source code is available for free from GIMP's website and requires you to compile the code before you can run the app on your machine. Binaries packaged for installing on the Mac will be available soon. While you wait, you can check out an excellent overview of GIMP 2.8 from Ars Technica.