As Atom 0.3 is deprecated, we really need to start using Atom 1.0. But, neither RC1, nor current subversion, contain an Atom 1.0 feed - WP is still using the deprecated 0.3 format.
Trac shows that this issue was noted months ago and patches have been supplied. Can Matt himself, or someone else in the know, explain why this is not included in 2.0? I really don't understand the reasoning behind this.