It's hard to imagine RSS will be exactly same as today 10 years later. But I don't see any standard group is actively working on improving it. If we view RSS as the "Abstract" of a reasrch paper, it does not have "Key Words".
I understand Buy.com. It extends RSS by adding "Product" tag. Anyway, RSS is a kind of XML and XML should be extendable, right?
Clay Shirky's article Power Laws, Weblogs, and Inequality remains as one classical. Today it is cited in Ross Mayfield's Power Law of Participation again.
Lots of blogs about SOA and Web 2.0, including SOA Versus Web 2.0?
We have many small RSS applications, including beeplet: http://www.beeplet.com/
They are nice but only like a feature.
I read following blog rolls almost daily:
2. Planet RDF
3. ZDNet Blogs