User blog comment:BertH/Layout and navigation updates coming October 3/@comment-188432-20120919230221/@comment-5275700-20120919234701

Exceptions won't be possible since we'll be removing the code for the older navigation style altogether. We understand that for some wikis, this change will be a design challenge, which is why we're giving you this lead time. And I do encourge you to view it that way -- as a challenge to your design abilities! What you've done with the design of tardis is very impressive, and I am confident that you'll come up with something cool to do with the updated navigation.