As per IRC, I submitted a bug with an attached patch for release-notes. It documents the possible workaround of adding both squeeze and wheezy sources to sources.list.
Please see #706684 [1] for details. -- Richard [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706684 -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org