While we don’t have the details on what the unannounced games will be we do now know exactly what the initial releases will include. The NES games coming to us on September 1st will include very basic manuals, pass n play multiplayer, and the standard VC Suspend feature. Later when these titles go on sale for non 3DS ambassadors they will have updated manuals, wireless multiplayer between 3DS’s, and save state functionality.
I can’t say the same for the GBA games which will be incredibly bare bones. They will come with manuals, but no suspend play so you can’t just close your 3DS and go into sleep mode. You need to find a save point and exit the game before you can quit playing.