OldPlayer,
For questions on the future of DOSBox I suggest asking Qbix or Harekiet who are the devs responsible for it. Digging up old threads is not the way.
Keep in mind that the purpose of DOSBox is an entirely open source emulator to make as many DOS games work as possible on multiple operating systems and hardware without a lot of dependencies and with default emulated options and hardware to run as many games as possible without having the user having to configure hundreds of options.
It seems that people nowadays prefer the Apple method of throwing hardware and software away since there is no money in "old" things (even though those "consumers" bought it for alot of money....). So any replacement or continuation would need to decide if they are only going to use the latest and greatest programming language, compiler, OS, Hardware, etc and stop supporting anything older or support both or decide if there is a certain cutoff period based off of bad statistics or statistics they want to believe, facts please.
It also needs to make sure it's protected legally as far as so called "abandonware" is concerned so any such project should separate itself from that unless they have the funding, time and mentality to deal with it.
Something else to keep in mind is project drift or bloat. Just because a fork has a commit doesn't mean the original project should have that commit. Forks have different purposes, commits should stay with the fork if they don't align with the other project.