Rintze tweeted this announcement today:
http://groups.google.com/group/pandoc-discuss/browse_thread/thread/5daf0495c1464b2c?pli=1
I also noted on twitter that, in addition to adding citation support
to the pandoc internal document model (which might be a good basis,
along with the work from other implementors, on a CSL API; the
markdown syntax itself could be borrowed as well for plain text
formats), this release also can read and dump that model to JSON.
Bruce