+* action=query&prop=revisions now takes a 'rvslots' parameter to indicate the
+ multi-content revision slots for which content should be returned. It also
+ has a new rvprop, 'roles', to indicate which roles have slots. A deprecation
+ warning will be issued if rvprop=content or rvprop=contentmodel are used
+ without rvslots.
+* The rvcontentformat parameter to action=query&prop=revisions has been
+ deprecated. Clients should be prepared to deal with the default format for
+ relevant models.
+* Use of the deprecated parameters rvexpandtemplates, rvgeneratexml, rvparse,
+ rvdiffto, rvdifftotext, rvdifftotextpst, rvcontentformat, or the deprecated
+ rvprop=parsetree is forbidden with the new 'rvslots' parameter.
+* action=query&prop=deletedrevisions, action=query&list=allrevisions, and
+ action=query&list=alldeletedrevisions are changed similarly to
+ &prop=revisions (see the three previous items).