Yes, she was on trial but she's now back at the yard for completion. Cruise ships often look almost finished externally months before their delivery, even if the interior work is far from being completed.
That said those pictures look too perfect to me... If I'm sure they are real, I guess they were slightly photoshopped, there's always at least a few paint jobs left until the end. I'm pretty sure as well those shots will be be used as promotional material for Cunard and/or Fincantieri.