This is good to know. I usually have a mixed set of applications for stable and non stable, depending on how much I trust the devs for this. If the release of Gimp 3 wouldn't be on the corner, I probably used it too.
I'm on Linux and use Wayland (details not important if you are not familiar with it) and Gimp 3 still has a few issues regarding that. At least based on their own notes, so I will wait a few weeks (or months) longer, because I am not at a hurry at the moment. Can't wait for this massive update and a huge step forward! Glad to hear it is already working well (I would assume that if they are close to release.)