It was some kind of a gossip/spoiler website. There are a million of them out there. I'll see if I can retrace my steps and find the article. It's not official but this gossip ho ran into the dude who plays John at a party and the inside story was that they're cancelled. So take it with a grain of salt. I sure hope I'm wrong because I love that show and I think they got shafted by the writer's strike. I think a proper season finale would have helped a lot.
As far as Moon goes, I'd forgotten about her being in that repeating day series last year. Yeah, that cancellation really pissed me off too. Grrrr.