Opps just when you here about Titanic II being laid down in December well RCI may just build another Oasis, Oasis Class holds Oasis of the Seas & Allure of the Seas. Below is a link that I found and iv searched the internet and wikipedia has even made an 3rd sister section on Oasis Class article.
from link >
Rumors are flying after a Finnish newspaper, Turun Sanomat, reported that Royal Caribbean is about to sign a deal to build a third Oasis-class ship.
The massive vessel would be a sister ship to the 225,282-ton Oasis of the Seas and Allure of the Seas, the largest ships in the world.
> link >http://www.usatoday.com/story/cruiselog/2012/10/04/royal-caribbean-new-oasis-class-ship/1612625/