One of the Romulans who remotely controls of the camouflage ship is Admiral Valdore. He shares the same name as Commander Donatra's warbird Valdore from Star Trek: Nemesis (2002). It is likely that the warbird was named in honor of the Admiral.
The name of the Andorian homeworld had been inconsistent throughout Star Trek history, being referred to as either Andor or Andoria. This episode finally settled the matter by revealing that the Andorians live on a moon that orbits a ringed gas giant, with the gas giant being called Andor, and the moon called Andoria.
It is interesting to note that the Vulcans and Andorians, who used to be bitter enemies, also live on totally opposite planets. Where Vulcan, the homeworld of the Vulcans, is a hot desert planet, Andoria is an ice planet.