Many thanks to our beta testers who put the v4.1 beta through the paces! This is a free upgrade for version 2.x/3.x/4.0 users. Just use your existing product key to register 4.1. It has a 14 day trial as well if you would like to kick the tires first! This is a new trial even if you had a previous v4.0 trial that had expired. You can download it here. Please send your feedback/bug reports to support@controlmynikon.com.    ​Release Notes NEW FEATURE: Added D600 support. NEW FEATURE: Added D5200