The folks at Kotaku were able to snap some pictures of the Joy-Con controllers for Nintendo Switch and compare them to a New Nintendo 3DS XL. You can them them out in the gallery below. The Joy-Con offer several new ways for players to interact with games. Two Joy-Con can be used independently in each hand, or together as one game controller when attached to the Joy-Con grip. They can also attach to the main console for use in handheld mode, or be shared with friends to enjoy two-player action in supported games.
Source: Kotaku