"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Pricing Leak Suggests MacBook Air Release at WWDC, Retina MacBook Pro Update Shipping Later?
These leaks line up with a report from KGI Securities analyst Ming-Chi Kuo who said in April that the MacBook Air update expected at WWDC would ship very soon after the event, while the Retina MacBook Pro would ship later due to production bottlenecks on the advanced displays.
Today, we have received specific pricing for the aforementioned SKUs, and the price-points correspond to Apple’s current pricing for the 11-inch and 13-inch MacBook Air models. We have yet to receive pricing information that points to the imminent availability of new MacBook Pros (as some had hoped), but perhaps the next refresh to Apple’s Pro portables will arrive in the coming months. Supply constraints to the Retina MacBook Pro line seems to infer that…The site also says it received pricing for three new accessories that could be new AirPort Extreme and Time Capsule models. If accurate, these would likely support the new 802.11ac-wireless standard.
As we wrote in our WWDC rumor roundup earlier today, the notebook updates are likely to be the hardware highlight of WWDC, with new MacBook Air and Retina MacBook Pro models announced.
Expected upgrades include a shift to Haswell processors, a possible slimmer design for the 13-inch Retina MacBook Pro, a new full HD (2.0-megapixel) FaceTime camera on the Retina models, and a dual-microphone system on the MacBook Air.