Warlord Games has released their new plastic Panzer III Ausf L and M kit over in their webshop.
From the release:
Our latest resin Panzer III variants to reinforce your Wehrmacht armies are the Ausf. L and Ausf. M. The Ausf L featured thicker armour than its predecessors, while the M added schürzen for added protection and a deep-wading exhaust making it capable of fording shallow rivers.