latest 1.1 XSDs

Are the latest DITA 1.1 XSD's those posted on 2006 Sep 5 at
http://www.oasis-open.org/apps/org/workgroup/dita/download.php/20143/dit
a_xsd_1.1b.zip

The latest change date in that set is August 30.  There
are files with no comments and files with comments
saying they are DITA 1.0.1 files.

Some lines in topic.xsd, such as: