Ben Lovejoy, 9to5Mac:

While early rumors suggested that Apple was holding out for long-range charging, without the need to place the iPhone on a charging pad, those hopes appear to have been dashed by more recent reports. These suggest that Apple will, like other manufacturers, use simple inductive charging.

Apple is now listed as a member of the Qi Wireless Power Consortium. Qi is an inductive wireless charging standard that is already in use in more than a thousand products.

Ben quotes IHS Technology analyst Vicky Yussuff:

The success of wireless charging adoption from Apple’s competitors is something that Apple can no longer ignore. IHS Technology consumer survey data shows over 90% of consumers want wireless charging on their next device.

Note that the Apple uses Qi charging for the Apple Watch:

Apple already uses Qi charging for the Watch, but as The Register noted back in 2015, it uses a tweaked version that means you can’t use other Qi chargers. It seems likely it will do the same with the iPhone.

Conjecture, but reasonable conjecture.