That's a popular rumor for while now. Scott at the DCLblog found articles from the ship yard saying that the Wonder is going there for her major refit.
DCL has a few options regarding yards and whos doing what. The 3 yards that come to immediate mind are in no particular order, Freeport, Bahamas, Cadiz Spain, BAE in Va, and a yard in Vancouver. Realistically BAE is probably out since DCL had a hard time getting the necessary work visas for the crews coming from overseas. That leaves Freeport and Cadiz in the east, and Vancouver in the west. Freeport has a past hx with DCL and now Cadiz does also, but both yards have done as much damage during a drydock period as they fixed.