See the following, looks like a couple new colors (Ruby Red/Oxford White) and ordering starts this November; otherwise not much, as expected:
http://www.torquenews.com/106/2014-ford-mustang-get-new-colors-packages-no-more-boss-302
http://www.torquenews.com/106/2014-ford-mustang-get-new-colors-packages-no-more-boss-302