Does this mean no more DoomRL? :(
I doubt it. Even when it was just Kornel, he managed to keep not only DoomRL going, but BerserkRL and AliensRL, and still managed to keep interfacing with the community fairly often.
Now the development team is much bigger and even though Jupiter Hell might be commercial-quality, I dare-say that they'll still find some time to work on DoomRL ;)
The worst case scenario that I can see happening is that releases to version 1 get either postponed indefinitely or version 1 gets fast-tracked and the community takes over management of it - but these are extreme.