"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Apple Looking To Port ZFS for Mac OS X?
ZFS is a relatively new open-source file system backed by Sun. As such, it is included in recent versions of Solaris for SPARC and x86 architectures. A comparison of HFS+ (what Mac OS X currently uses as its default file system) and other file systems including ZFS can be found on this wikipedia page.