Can you share a timeline for release of a native Apple silicon version of Smart Shooter 4?
I have successfully avoided running Rosetta2, and would hate to break the streak 
Sorry for the delay!
The support for Apple Silicon will be part of the next major update to Smart Shooter.
Will that be a free upgrade for Smart Shooter 4 (the current release)?
Smart Shooter 5 is now available.
The upgrade cost depends on when you purchased Smart Shooter 4. For very recent purchases, it is a free upgrade. Otherwise it will need a new purchase.