My half-sister Jordan from Cinelinx interviewed the great Billy Dee Williams. Billy Dee dropped this bomb during Jordan’s interview (not really my half-sister):
He said he’s been working with the Rebels crew for a year or so and when I asked him bluntly if we’ll see him again in Star Wars Rebels he responded: “Yeah! There’s more adventures with Lando coming up.”
So there we have it. Lando will return to Star Wars Rebels! Of course he promises Chopper they will meet again and waves to the ship proclaiming “until we meet again!” But this sounds like the work is done and Lando will be back in Season II of Star Wars Rebels at the latest! Hopefully they make a bigger deal out of it next time and handle the official announcements before its out!