Topolsky did mention in his post that he has a project on the horizon that he will be sharing more about. Ryan Block and Peter Rojas went on to start GDGT so maybe the alienated engadget editors have some new fresh take on tech up their sleeve.
I really wonder what they'll do with the podcast. With all three gone now, it'll be extremely hard to continue on with the show - either they find replacements, which will change the atmosphere of show altogether, or they just discontinue it.