"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Mobile Penryns to Launch on January 6th
The upcoming mobile Penryn CPUs have been previously summarized and are expected to provide new processors that Apple could use in an upcoming MacBook Pro update.
Macworld San Francisco starts on January 14th, with a Keynote speech to be given by Steve Jobs on January 15th.