No, the license that was in effect at the time of purchase is the one you will be held to.
since you purchased under the Unlimited sites license, that is the license you are entitled to.
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.