Dave
Winer reports that a
developer preview
of the
XML-RPC-based
Blogger API 2.0 has been made available on the
BloggerDev group
on Yahoo (you'll have to join the group if you want to view the spec).
The new spec makes use of XML-RPC structs for just about everything
(so it will take some work to support) and finally supports weblog entry titles (but it will be worth it).