Cone material not the only upgrade.
From the latest Soundstage report on the new Pulsar 2:
"Updated from the old is a new 5.5” midrange-woofer, which has a layer of graphene added to the magnesium-based midrange-woofer cone. But that’s not all. Joseph told me that the driver’s entire motor system and suspension have also been improved, all for much better bass and midrange performance. "
BTW: Apparently in the past, when he has upgraded a speaker, Jeff Joseph has offered those upgrades to existing owners.