From the TEI Manuscript Special Interest group but of interest to people
here as well. The newest edition of the TEI guidelines is introducing quite a number of really useful tools, elements, and approaches. It is about a month away from an official release and the last few things are still being nailed down and copy-edited, but it going to be quite interesting.
The next release after this should also have a new section on physical bibliography that will be of interest to medievalists as well.