The GIMP 2.2.0

The GIMP is the GNU Image Manipulation Program. It is a freely distributed piece of software suitable for such tasks as photo retouching, image composition and image authoring.

What's New:

Previews for transform tools
Previews for many plugins that didn't have them, and improved previews for many that did. Preview now can resize and contain a navigation popup just like the main image window
Many user interface changes to improve layout of dialogs, and comply more closely with Human Interface Guidelines
Greatly improved drag-and-drop between GIMP and other applications
Improved ability to copy and paste between GIMP and other applications, including OpenOffice and Abiword
New file open/save dialogs. The open dialog does automatic thumbnailing, using embedded EXIF thumbnails if available
Much content covered by the help
A new script interpreter, Tiny-fu, which will eventually replace Script-fu. Shipped separately
Interface for controlling various parameters with a variety of devices. Allow keyboard, mouse wheel, MIDI controller, etc to be used as a GIMP controller
New plugins: neon, cartoon, photocopy, softglow, dog, retinex, glob