The iPad Pro is a big, expensive tablet

Two key accessories will be made available alongside the iPad Pro: a keyboard case and a stylus.

Dubbed the Smart Keyboard, Apple's first self-made keyboard cover is a case featuring an integrated MacBook-like keyboard. The Smart Keyboard features the same butterfly switches found in the ultra-thin new MacBook, allowing Apple to keep size down.

Apple's first attempt at a stylus, the Apple Pencil, is very much a typical stylus. Pairing it with an iPad Pro does however unlock additional functionality in apps such as the Office suite and Notes.

Notably, the Apple Pencil recharges using a Lighting connector, allowing users to plug it straight into the iPad for a top up. 15 seconds of charge is said to provide 30 minutes of battery life. The Apple Pencil can be used for up to 12 hours on a single charge. 

Both the Smart Keyboard and Apple Pencil will be sold separately. The Smart Keyboard will only work with the iPad Pro, but its not yet clear whether the Pencil will work with other iPad models.