A recent report by has delved into a few of the specifications that could be coming to the inductive-style wireless charging feature of the iPhone 8, iPhone 7s, and iPhone 7s Plus.
Wireless Charging will be there, but with Slow Speed:
According to the site, citing a source well versed in the Wireless Power Consortium, Apple's devices will only support half of the power profile currently standard in Qi version 1.2, meaning the iPhone 8 will charge at a slower rate compared to other devices when using wireless charging.
Maximum of 7.5 Watt of Power in Charging:
Specifically, version 1.2 of the Qi standard allows for 15 watts of power transmitted from the wireless charging pad to the receiving device.
According to the report, the iPhone 8 will support half of that standard at a maximum of 7.5 watts of power (5 volts over 1.5 amps).
While faster than Apple's current 5W USB power adapter, if the information turns out to be true then Apple's new line of iPhones would lack compatibility with more current Qi wireless charging accessories.
Apple is also expected to require third-party manufacturers to acquire a "Made for iPhone" license before marketing their charging pads as iPhone-compatible accessories.
Wireless Charging Rumors in iPhones:
While all three iPhones launching in 2017 are expected to include wireless charging of some kind, the ability might not be available to iPhone 8, iPhone 7s, and iPhone 7s Plus owners at launch. Over the summer it was rumored that software problems related to wireless charging were causing a "panic" at Apple, so the feature might not debut until an iOS 11 update later in the year, potentially alongside the retail releases of these MFi charging pads and Apple's own first-party accessory.