GIMP Painter project adjusts GIMP's UI. Today a person nicknamed sigtech of GIMP Painter project announced availability of several patches to user interface and painting functionality of GIMP.
The news are going to hit websites anyway, so best it to get things right from the beginning. Let's start with what GIMP Painter is. It's a fork of upstream GIMP that implements some painting related functionality that creators of the fork found missing in GIMP. Up till now two most significant changes were: Gps-gimp-paint-studio - Gimp + GPS (gimp paint studio)
GIMP Paint Studio updated for GIMP 2.8. Ramón Miranda released a brand new version of GIMP Paint Studio, a project that improves painting experience for GIMP users. G-P-S is essentially a collection of various resources such as brushes, palettes and suchlike to give painters the tools that GIMP used to be lacking by default. This version (download ZIP file) makes a heavy use of the new tool presets system in GIMP and delivers 78 presets in 7 categories: Eraser, FX, Ink, Sketch, Smudge and two generic sets of presets that could be summarized as “miscellaneous”. Tool presets from Sketch category It also ships 102 brushes, as well as 64 painting dynamic presets in 6 categories to define the best way to paint with those brushes.