"Hey Siri" support and possibly wireless charging case alongside AirPower charging mat.
AirPods and AirPower: Everything We Know
Intel's Skylake Processor Lineup for Retina MacBook Revealed
The low-end Core m3 6Y30 has a 900 MHz dual-core processor with Turbo Boost up to 2.2 GHz. The chip has 4MB of L3 cache, HD 515 graphics, a maximum GPU frequency of 850 MHz and 4.5 watt thermal design power (TDP). This chip would likely be suited for the base model 12-inch MacBook sold for $1,299.
The mid-tier Core m5 6Y54 and Core m5 6Y57 are similar chips with 1.1 GHz dual-core processors and Turbo Boost up to 2.7 GHz and 2.8 GHz respectively, 4MB of L3 cache, HD 515 graphics, a maximum GPU frequency of 900 MHz and 4.5 watt TDP. These chips would likely be suited for the high-end stock model 12-inch MacBook sold for $1,599.
The high-end Core m5 6Y75 is a 1.2 GHz dual-core processor with Turbo Boost up to 3.1 GHz, 4MB of L3 cache, HD 515 graphics, a maximum GPU frequency of 1 GHz and 4.5 watt TDP. This chip would be suited for the top of the line 12-inch MacBook model that carries a $150 premium over systems with the high-end stock chip.
CPU World shared further details about the processor specifications, noting that Core M chips can be run at 7 watts to allow for higher CPU clock speeds. Apple boosted the 900 MHz 5Y31 chip to 1.1 GHz, 1.1 GHz 5Y51 chip to 1.2 GHz and 1.2 GHz 5Y71 chip to 1.3 GHz for the current 12-inch MacBook lineup.
All chips have up to 2 SATA 6Gb/s ports, 10 lanes of PCI-Express interface, 6 USB2/USB3 ports and eMMC 5.0 interface. They support USB OTG and Rapid Storage Technology 14. The Core m microprocessors work with DDR3L-1600 and LPDDR3-1866 memory, and they are rated at 4.5 watt TDP and 3 watt SDP. They can also run at higher 7 watt TDP if needed.Last month, a leaked Intel slide deck revealed that "Y" series Skylake processors appropriate for the 12-inch Retina MacBook will have up to 17% faster CPU performance, up to 41% faster Intel HD graphics and up to 1.4 hours longer battery life compared to current-generation Core M architecture.
Intel's sixth-generation Core M processors are expected to launch next month, possibly at the IFA Berlin trade show this September 4-9.