https://www.theverge.com/2018/9/17/17869072/apple-airpower-overheating-issues

Overheating, communication, and interference issues are still plaguing the development of Apple’s AirPower wireless charging pad, according to a pair of reports citing multiple sources close to the matter. The issues contributed to the AirPower’s absence at last week’s iPhone announcement.

AirPower was first teased over a year ago at the same event that Apple used to announce the iPhone X, the company’s first handset to support wireless charging. AirPower was to be the firm’s debut wireless charger, capable of charging your AirPods (with compatible case), Apple Watch, and iPhone simultaneously. The consensus seems to be that Apple has bitten off much more than it can chew with the ambitious device.