Yup, the news release says that you won't be able to book for the Triumph cruises until September. So it will probably take until then for the system to catch up. I'm sure if you tried to book it with a Personal Vacation Planner, they would let you know the ships were changing. The existing Triumph cruises will be handled by another ship I am sure.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013