sebastianha My question is more about if there will be a smooth transition from beta to stable of if I have to reflash the stable version once released.
Your transition will be seamless. It is listed as experimental owing to the fact that bugs may crop up and users should be prepared to come across them. However just like releases first hitting alpha/beta there is nothing to stop such builds swiftly and without change being moved to stable.
You won't need to factory reset and you won't lose any data either when stable non experimental builds are released and you get the notification that your OS is updating.
Hope this alleviates any concerns you have, if I've been too broad in my response or you want me to explain anything further let me know.