According to this thread:
Hawiian Airlines will be flying in a brand new A330-200 from TLS via AUS to be parked at JFK until Saturday afternoon. I imagine the aircraft is coming in for some gate testing, ground crew familiarization, etc.
The flight into AUS:
I'll be flying JetBlue into JFK this evening so I'll certainly be looking for the a/c to get a pic, although an A330 among a sea of A320s/E190s certainly won't be hard to spot.