That update is not essential for Dreamweaver CS6, but we wanted to make sure the same code base was being used across all platforms. It is up to you if you want to install it or not.
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.