It's not GM Authority, it's what GM considers "new" on their ordering guide...If we recall the 2018 Volt's ordering guide, it stated the Bose system was standard on the LT when GM corrected later commented that was a mistake...
The MY17 Bolt's wireless charging was Powermat only while the MY18 includes Qi (required for the iPhone)...We could argue that it would have cost GM very little to add Qi from the beginning or that they should offer an upgrade kit to add Qi to other vehicles, but at the end of the day, GM doesn't appear to support convenient wireless CP/AA, wireless charging is slow and you can buy Qi chargers for $20ish if you have to have it...Furthermore, the iPhone 8/X supports fast charging, you will have to buy a lightning to USB-C cable and have amp/watt 12v USB-C charger to utilize it, a combo that can often be had for around $30 and that way you're able to use navigation and still add a significant charge...Most on the Volt forums state using their Android for AA navigation on the wireless charging pad results in the phone losing it's charge...