"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Mac OS X Family Pack... Now Available
Family Pack Software License Agreement allows you to install and use one copy of the Apple Software on up to a maximum of five (5) Apple-labeled computers at a time as long as those computers are located in the same household and used by persons who occupy that same household. By "household" we mean a person or persons sharing the same housing unit such as a home, apartment, mobile home or condominium. This license does not extend to students who reside at a separate on-campus location or to business or commercial users.
The Family Pack pricing was first revealed in this Wall Street Journal article by Walter Mossberg.