Seems there may still yet be some things going on with the UI prior to RTM. One can only hope.
SOURCE: How Microsoft can salvage Windows 8 before it's too late | ZDNetgiven that the Redmond giant has already gone on the record to say that the UI that we see in the Windows 8 Release Preview is not what will be in the final release, it's safe to say that things are in a certain state of flux.
An interesting read on what might be wrong with Windows 8 and might be done to address it. Nice, brief synopsis.
Yesterday was, Today is, but ahh Tomorrow...mystery, suspense and a promise of hope.