The new Microsoft Planner: A unified experience bringing together to-dos, tasks, plans and projects

I am just beginning to migrate my team from a self-made dashboard to using the current version of Planner while we wait for this newer version to become available.

Questions:

1) If I build our projects into the current Planner will they automatically convert to the new version when it launches? 

2) I need time tracking beyond days of the months. Will the new Planner include a time tracker element? Like, a start/stop timer when working on a particular task? If not, does anyone know of a widget that I can add? I am looking for a time tracking element that also can calculate the service fee for a particular task.

3) Is there a way to create folders for "plans?" I need to save plans for individual clients under separate folders.