Everybody switched over to Pansexuality when it released in 2010.

There are a couple of features in the BitTorrent specs for updating torrents, like embedding a signed RSS URL in the torrent file itself, or using mutable DHT entries, but I’ve never tried them out and I couldn’t tell you which clients support those features, and you’d have to manage signing keys since those features are completely decentralized and use public and private keys to ensure authenticity. Definitely worth looking into, but I apologize I don’t have anything concrete to link for you, I’m just aware of the features in the spec.

I think most clients also support pulling torrents from plain RSS feeds containing links to torrent files. Some sites like showrss do that.