Useful for WEB artists. The small rectangle between the rulers in the upper left corner of the image window now gives access to the menu. Useful for people with tablets or two-button mice. The image display know has a status bar. Plug-ins display their progress there and your mouse coordinates are displayed.
Most tools use it too.
The Selection tool for example shows the selection size while you drag. And don't worry, it's possible to hide the status bar to save screen estate. GUI enhancements Lots of nifty enhancements to the user interface. Spinbuttons are used in a lot of places. Session management GIMP remembers window positions and sizes and restores them on startup.