The dialogue is so hilariously frustrating when it comes to figuring out what means what. I choose to take this as, 'a new class of Borg-i-fied ships' and not specifically a new named class of ship design.
Kind of like how the Defiant was a new class of ship (the Defiant class) and also a new class (umbrella term) of Starfleet vessels intended for kicking ass.
That's the thing. I don't need a 5 minute exposition on the ship, just better chosen dialog.
"A new type (or testbed) of ship, incorporating Borg technology from the artifact".