"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
Intel Delays Montevina Platform to July 14th
Apple followers have been paying attention to the Montevina release as a possible marker for the next MacBook revision. Apple last updated the MacBook in February of this year. The latest rumors have pointed to the 3rd Quarter of 2008 (July-September) as the delivery timeframe for the next MacBook.
Intel's Montevina revision promises Mac users a faster front side bus and faster Penryn processors over the existing designs.