As for the controller I dont think it has been finalized but I have seen and programmed for the official concept controller and used it twice. It is very similar to the nesvolution one pad for each hand with weighted gyroscopes and haptic feedback. At first glance it seems kind of weird to think about tactically using it to control certain types of games but once you pick it up its actually very simple and easy to use with any game. I know Nintendo is still working on a way to connect the two controllers at the players will, probably through a magnetic lock system. As for the Nintendo On which it WILL NOT be called once it is confirmed will present a panoramic view to represent a full field on vision as we all have in real life and will be in HD believe it or not. It will probably be confirmed when the spec for the Rev. are made public and will be launched a quarter year after Rev. launches. My only gripe is that the On system at launch will retail for the same amount as the actual Rev. system itself. It will not be a gaming machine unto itself but merely an add-on to the Rev. to allow completely immersive experiences.
Stereoscopic 3-D will also be a prevalent part of the interface but coupled with the visor and controllers will allow something NEVER seen before in gaming. The stereoscoping is still being tweaked to turn whatever room your in into a the game environment effectively rendering your room part of the game. Coupled with the visor this could turn you entire home into a nightmarish landscape. The projector alone with only be able to project a limited no. of NPCs into your environment at any given time depending on the size of the NPCs. Take RE4 for example the projector could probably project about 12 ganados at any given time into your environment but only one El Gigante or boss at a time. When the visor is on though it will allow the entire game to be presented in full virtual reality with no sacrifices whatsoever, and with the environment capturing radar it could effectively turn your own home into the game environment. Imagine Resident Evil zombies busting through your doors and coming after you with their blood and body parts being rendered onto your environment in real-time as you fight them. That is an actual possibility of the On visor.
The controller will be capable of everything past controllers were but much more and the customization that you will have at your hands is unprecedented. It will feature haptic feedback illustrating through vibration whatever your on-screen character is doing or feeling this represents mood, heartbeat, nervousness, adrenaline rushes, tension, being shot or hit with something, jumping from a high place, etc
This haptic force feedback will be mapped into buttons and controller itself. Another controller feature is its ability to heat up and cool down illustrating how the environment temperature feels or it you are having to hold on to something that is hot or cold. Coupled with this is the controller will have built-in mic to talk to things or blow on things in the game to move them or cool them down. The mic will also have voice distortion features to work with the dev. Tool or chat online. The other big feature of the controller is its ability to feel depth and reach out and grab the world so to speak. For example instead of just pressing a button to open a door you would point one of the control pad towards the door twist the knob and pull the door open, or just kick it open with another movement. This depth mapping allows all sorts of actions to be preformed much more realistically and true to life for example: swinging a sword, reloading or firing a weapon, picking something up and turning it over, do melee combat with your own two hands
etc.
An example I saw in action was a character was hanging from a ledge MGS style and you would literally have to squeeze the handles to keep from falling and you could also feel the haptic vibration from his heart and the coolness of the ledge. This was a tech demo showing all of the features working together. Of course all this will be left up to the developer but they promise to be extraordinary features. The projector will also have two options: Stereoscopic 3-D or flat panel projection. This allows Rev. to be a portable system as it can project the game on any wall or flat surface. The stand for Rev. will be a recharger of sorts and will have the angle required to be project Stereoscopic 3-D properly. The only reason for the rechargeable battey is for the projection otherwise when you run out of battery life you can just hook it up to a TV or computer monitor.