I think you might be confusing the terms "Update" and "Upgrade".
Updates are bug fixes that are free and appear in your download section automatically.
Upgrades include new features that you purchase through the Upgrade Center.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.