https://www.techradar.com/news/iphone-xs-packaging-mentions-airpower-charging-mat

The Apple iPhone XS has started shipping out to customers, who are discovering something in the owner’s manual: instructions on how to charge it using the AirPower wireless charging mat, which Apple hasn’t even given a release date. 

The AirPower is (or was, as its fate is uncertain) a Qi-certified mat that Apple claimed would be able to wirelessly charge three devices at once at different wattages, like an iPhone and Apple Watch 4. A report hinted that the mat runs on an iPhone-like processor running a simplified iOS to interact with Apple products.