Your search for "expanded anatomy 2" revealed the following:
Heroscape: Secrets of the Citadel - Bleakewoode's Bane: Associates of Volarak Army Expansion Premium Painted (Pre-Order)
Renegade Game Studios
$74.95
Expansion for G.I. JOE Heroscape: Rumble at the Rift Battle Box / Heroscape Marvel: The Conflict Begins / Heroscape Master Set: Battle for the Underdark / Heroscape Master Set: Age of Annihilation / Heroscape Master Set: Rise of the Valkyrie...