Noticed in this week's dev update that the 337 has an update. Carenado's site list the following improvements in Version 2..

Improved propellers animation.
-Improved windshield reflexions quality.
-Added new liveries.
-Added compatibility with WT’s GNS, PMS’s GTN 750 and TDS’s GTN 750Xi.
-Added wheels ground effects
-Added engine startup and heat effects.
-Improved flight dynamics stability.
-Redesigned fuel system.
-Redesigned electrical system.
-Changed pilots to default MS avatars for broader selection.
-Fixed propeller feather logic.
-Fixed electronic EGT gauge readings.
-Fixed landing gear lights logic.
-Improved elevator and rudder trim wheels animation.
-Implemented controller VR compatibility.
-Other minor bug fixes.