From the Canon Digital Learning Center:
EOS 7D Mark II, EOS 5DS and EOS 5DS R users who have longed for a quick and simple way to add Wi-Fi capability to their cameras, rejoice! Canon is introducing a new and affordable way to enable wireless connectivity to compatible mobile devices, and even communicate with Windows or Mac computers — the Wi-Fi Adapter W-E1.Read the entire article on the Canon Digital Learning Center
This wireless adapter is going to open up new possibilities to users of these cameras — from casual shooters to working professionals. Being able to quickly view and store your DSLR images on a mobile device makes it easier to share images you’ve just taken with family members, friends, or even professional clients.
This device will be available separately as an optional accessory for owners of any of the above-mentioned EOS camera models. And from Fall 2016 onward, the EOS 7D Mark II will be sold with this Wi-Fi Adapter included in the box. We’ll go into detail about that below. First, some basics about this new Wi-Fi unit.