GIMP 3.0 has been more than one decade in the making as the port from GTK2 to GTK3, also transitioning away from Python 2 to Python 3 support, and a wealth of other improvements from the UI to lower down into enhancing this open-source Photoshop alternative.
The GIMP project announced on X/Twitter today that they have entered the string freeze for this much anticipated release.
I just flipped through the introduction of a GIMP book that the authors hoped 3.0 would be out so they could cover it but ultimately based the book on 2.6 due to delays. It’s copyright 2012, apparently something (didn’t) happen.