I'm going to sleep. When I wake up, maybe people will have made posts about the following two things:
A connector is shown, like the Wii Nunchuk. This tells me the detachable controllers don't have their own batteries. If they did, they wouldn't need such huge connectors and could just use wireless communication.
This is important regarding the rumours we heard about new Wii remote models.
This tells me that the TV connector is a mini-HDMI to HDMI cable that connects directly to the TV or to the dock.
To connect to the dock, the cable would need to connect from dock to TV and the NX connects to the dock.
There is no information still about any performance changing modes when docked, especially now we know there is a TV connector on the NX itself.
So does that mean the NX only works in one state? Does that mean there will be an SCD later on? I don't know.
Edit: All quotes are from the OP.