Ernest, the lead dev for Kbin, has had a lot of big events happen in his life recently, so he has a tendency to just kinda disappear for weeks/months at a time while the project gets put on hold. He'll usually come back, announce new plans for development, maybe push out a few updates, and then inevitably go radio silent again.
I believe he's got a few people assisting him now, but development has definitely slowed to the point of becoming concerning. I think it might be time for the Mbin team to start getting a little more free with the fork.