More than 8bpp color depth is available in GIMP and has been so for a while now if you use the development version. GIMP was a little late to the game, but the issue has been fixed.
Also: your comment was arrogant and impolite towards the GIMP team.
Also: your comment was arrogant and impolite towards the GIMP team.
In fact, I use quite a lot of software from their development repositories, e.g. GCC and Blender. It is a very rare occasion that I come by a bug as most open source projects have sane version management practices and branching processes.