None that I know of. But the question remains is whether websites will want to provide a syndication mechanism similar to RSS. Google apparently thinks that it isn't worth maintaining and they are just the ones aggregating the feeds. RSS feeds won't die and will definitely be used in various niches such as podcasting. But if RSS feeds are losing popularity as Google claims, I am worried about their future. Combined with the fact they are probably harder to monetize, I would not be surprised if their days are numbered on most common websites. And that sucks, cause RSS readers always felt like using a cheat code on the internet and I don't find anything that replaces it to my satisfaction.