The original Dev was already moved on (Left) long time ago.
There was someone else said they were picking it up last year, but nothing after the initial 'bug fix patch'.
So I assume their passion died down soon after.
Tho the aim of the Dev from start is always "an easy to access game framework that anyone could contribute even they don't know about coding". So maybe someone else will pick it up in the future?
He never said he plan to stay on this project.
Duke Nukem Forever is a totally different case, it's from an established studio / publisher with a well known and well loved IP... not sure why it's even mentioned here....(BTW, IMO Duke Nukem Forever should've never come out)