From what I know, The Gboot rebooter can only execute one game at a time by its default.xex.
being that this is only the developer edition of the tool so we will not be seeing this for a few weeks as an open release to the public.
The main point here is we are that much closer to running custom dashboards and lists of games from our HDD's
Here is the source
Sit back and relax everyone things are looking pretty good for the scene.