This info is from V-Flyer that collects data on the planes used in the past few months. While it is not always 100% accurate, it is a good reference.
VS601 and VS602: A340-300 with Arcadia or A340-600 with Odyssey or v:Port
A few days prior to departure, you might want to come back and ask again, as a VS
worker might be able to tell you which plane.