I hadn't heard that there aren't going to be any more official jams. I know there was an official jam in December (Bitsy Jam #78). I assumed folks just got busy in January. If it's true there won't be any more, that's really too bad.
In any case though, I'm pretty sure you can always hold your own unofficial jams! Also, sometimes Adam lets official jams be guest hosted, so maybe you could try to reach out to him if you're interested?