The deal between Microsoft and Novell includes work on ODF:
"The two companies will now work together on ways for OpenOffice and Microsoft Office users to best share documents and both will take steps to make translators available to improve interoperability between Open XML and OpenDocument Formats."
(From Novell's FAQs)
NetworkWord.com -- Microsoft, Novell partner on historic Windows, Linux interoperability deal
Linux.com -- Microsoft and Novell partner up
Commentary from Groklaw -- Novell Sells Out
No doubt there will be a lot more coverage on this development. Interesting to see what the two companies will really do with this deal.