After their successful Panzer IV Kickstarter last year, Night Sky Miniatures has returned to KS with a new campaign for Panzer III files. The core files included:
STUG IIIG (early)
STUG IIIG (late)
The campaign has already funded and a number of additional variants have been unlocked as stretch goals. Additionally NSM has made a file for the sdkfz 252 ammunition carrier available for free from the KS page.