Japanese gaming publication Famitsu has reached out to Nintendo to gather some more information about the newly revealed Nintendo Switch. Thankfully NeoGAF member Jim_Cacher has translated and summarised the article and you can read the points below.

NS is not the successor of Wii U

NS is not backward compatible with Wii U and 3DS

NS will be packaged with Joy-Con(L) and Joy-Con(R)

The packaging of other accessories will be announced separately for different regions before launch

Cartridge is called “Game Card” internally

Specifications of cartridge will be announced before launch

Battery life will be announced later. The development team aims at allowing players to play NS conveniently at places without electricity connection.

At this moment, no information on compatibility of smartphone apps can be provided

Source