"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AT&T and Apple Tightening Policies to Reduce iPhone Unlocking
Gizmodo spoke with AT&T's President of National Distribution Glenn Lurie, who revealed that all iPhone activations will take place in-store. This is in contrast to the current system in which customers may activate their iPhones from home using iTunes. Additionally, Reuters reports that AT&T has said that purchasers who do not activate their iPhones within 30 days will be subject to penalties. No details on these proposed penalties have been made public.