Headup Games has confirmed that The Binding Of Isaac: Afterbirth+ will be released on September 7th for Nintendo Switch, and it will contain a manual as well as two sticker sheets along with the game itself. The game as already released in North America, and it can be imported but that is the NTSC version, which may require a US Nintendo account to download additional content.

The game is currently available to pre-order from Amazon for £31.99.
Source: Twitter