Apple will reportedly release a new variant of its USB-C adapter, a 35W dual USB-C port power adapter.
The accessory was first spotted by 9to5Mac, in a now-deleted support document published on Apple's website. The document stated that the accessory will support USB-C Power Delivery technology, or specifically:
Input: 100–240V /1.0A
(USB PD) Output 1 or 2: 5VDC/3A or 9VDC/3A or 15VDC/2.33A or 20VDC/1.75A
The document also revealed that the adapter won't come with a cable so users would need to purchase a separate one if it's released. (Typical of Apple.)
The adapter would be very convenient for users with multiple Apple devices as you don't need to bring more than one brick when you're on the go.