It looks like the name of Royal Caribbean Line's 4th Oasis class ship may have been leaked by partner company which works with the cruise company.
FlowRider touted the work it was doing with its biggest client, Royal Caribbean, and repeatedly referred to the 4th Oasis class ship as Symphony of the Seas.
The blog post mentions the new ship in reference to the fact it will have a FlowRider onboard,
"But what does all of this have to do with music? Well, Symphony of the Seas®, that’s what. This is what RCCL will call their fourth OASIS Class cruise ship and it’s due to be commissioned later this year! Translation: we are super busy building #17 and 18 on the beautiful Ms. Symphony. With even more in the pipeline, can we ask for a better advertisement for repeat business? For customer AND consumer satisfaction? And if it is “good to great” enough for RCCL, shouldn’t it be for you?"
Royal Caribbean has not officially announced the name yet. "Oasis 4" is under construction in STX France and will join RCI's fleet in spring 2018.