With subscription, you are notified by email when an applicable release is available. It is very important to keep your contact information up-to-date. You will receive the software upgrade by mail, or you may be able to download it through the Subscription Center. The notification will specify how the upgrade will be made available to you.
Extensions and bonus tools
Extensions and bonus tools are modular enhancements for your Autodesk software. They can include utilities, content libraries, or plug-ins, and often provide new functionality or features. They are compatible with the base product, and are easy to learn. Extensions and bonus tools are available exclusively to Autodesk Subscription customers via the Subscription Center.