Nintendo announced this morning that the Pokémon GO Plus accessory will now be released in September 2016 instead of the originally expected end of July launch date.
The Pokémon GO Plus is a small device that lets you enjoy Pokémon GO while you're on the move and not looking at your smartphone. The device connects to a smartphone via Bluetooth low energy and notifies you about events in the game—such as the appearance of a Pokémon nearby—using an LED and vibration.
There's no word on an specific date for its release or date for pre-orders yet. Stay tuned for more details!
Source: Nintendo PR / Pokemon GO