According to KGI Securities analyst Ming-Chi Kuo, next
generation 2017 model iPhone 8, iPhone 7S and 7S Plus would bundle same 5-watt
power adapter like current iPhones but Wireless charger to be sold separately.
Kuo also said Apple is testing 3D sensing facial recognition instead of Touch ID to unlock iPhone 8.

All new upcoming iPhones will adopt glass bodies with metal
frames to facilitate WPC-standard wireless charging functionality. WPC-standard
refers to the Wireless Power Consortium, which supports the Qi wireless
charging functionality built into many Android devices. 

iPhone 8, iPhone 7S and 7S Plus would bundle same 5-watt power adapter like current iPhones but Wireless charger to be sold separately.
Image Via iDropNews
Next Gen iPhone models will feature wireless charging, improved
speaker system, 3GB of RAM on iPhone 8 and iPhone 7S Plus while 2GB on iPhone7S
along with 64 and 256GB storage options. But you may not have a Wireless
charger in the box, wireless charger will be sold separately like Apple Airpods
which probably may cost more than $100.

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