Well, it looks like they are done looking for "dating couples."
The official CBS TAR casting page now only lists the following:
We are now accepting applications for 2015. This new season will film sometime between May and the end of July 2015
DO NOT APPLY IF YOU CAN NOT TAKE OFF WORK TO FILM THE SHOW!!!
Which also means this would be TAR 27!
(I know, it hasn't officially been renewed, yet.)