Today, when I was exploring some GigaPans, I found something really nice :)
"Snapshots & Comments Feed" is now available. You can find the link for the feed of each GigaPan panorama on it's page. I don't know if it's permanent or just a test, but something is obvious: It's a good sign. I hope the Gigapan team add the feed for GigaPan panoramas soon.
I guess I'm the first person spreading the news. I found no post about this on GigaPan forum and GigaPan blog, please let me know if you have any update.