No. Version 2.5 is the last version we developed for the Mac App Store. If you want to upgrade to Paperless 3 for Mac, you will need to do so through the Mariner eStore. Please contact Mariner Sales at sales@marinersoftware.com with a proof of purchase (the Apple e-receipt you received at purchase or a screenshot of your Mac App Store Purchases tab showing Paperless are examples) and we will generate a temporary serial number for you to use to validate your upgrade price in our eStore to upgrade to Paperless 3.