Among the other news from yesterday's Apple Developers Conference keynote, it's interesting to note that apple picked the blue RSS icon and not the orange XML one to represent RSS (and Atom).
Even if I'm a long time orange icon user and fan, I think I can imagine Apple thinking: "why using an icon with the word 'XML' to link to something we call 'RSS'?". It's true: users are smart, but why making their life harder? Paolo Valdemarin: Safari and RSS
I laughed when I read this. It's true, an icon labelled "RSS" does make a lot more sense. Also, regardless of format (e.g. Atom), RSS is the branding term.