The good news: It simply works;-) Get the Application Server 8.2 and install it. Then add it as a Remote Server to Creator’s Server Navigator. Now you can deploy your applications to it ;-).
Maybe some people want to try that;-)
But I would not recomment replacing the `bundled’ application server in Creator. This would create a lot of problems because we make heavy use of the bundled database engine for our examples etc. Application Server 8.2 switched to Apache Derby as bundled DB engine.