Mike's Totally Free Jeep News is reporting on unofficial pricing of the Wrangler unlimited:

http://www.jeepnewsnow.com/modules/news/article.php?storyid=1156

Pricing excerpt:
4x4 x $23,500
Sahara loaded $30,650
Rubicon loaded $33,750

If I'm not mistaken, these prices are actually pretty similar to the current 2-door unlimited.