New Draft Atom Format Spec
There's a new draft of the Atom Syndication Format specification draft-ietf-atompub-format-03 that incorporates a lot of the suggested changes that have been flying around on the atom-syntax mailing list the past few months.
On the whole, I like it. We probably won't put support for the revised format at FeedBurner until it goes beyond draft status, but we'll see. I especially like the Text construct, as well as the clarification of the dates on entries.