Apparently the logo for the next Zelda title has hit the net, found at Nintendo Insider (link below) and it is indeed subtitled "Twilight Princess" as GI reported.

http://nintendoinsider.com/site/EEEyklEpylxCttMLCZ.php

I'm sure there's going to be a lot of debate over the subtitle (like Wind Waker) but I'm more intrigued about the inclusion of a wolf in the logo...