The first of October finally came out the 2.6 version of the GNU Image Manipulation Program (GIMP).
This version offers several new features, user interface improvements and finally includes GEGL, a new generic graphic library that will provide support for 32bpc over the old 8bpc and future enhancement. This library is a milestone for the GIMP that makes it closer to the professional counterpart represented by Photoshop.
The interface, that has been harshly criticized by some users, has several enhancement: the application menu has been removed from the toolbox, a document windows will always be visible even with no image opened, and the floating tools windows will always be on top of the image window and cannot be obscured. Maybe these enhancement are still minimal but all this redesign
is based on inputs from users
There are more improvements even on tools and options, but you can discover them downloading the latest version
or even reading the official release notes