The new Apple Macbook still packs a 12-inch 2304x1440 IPS LCD screen, measures at 28.05x19.65x0.35-1.31cm and tips the scale at the same 0.92kg. The rest of the specifications also remain unchanged so you get one USB 3.1 Type-C port, dual-band 802.11ac WiFi and up to 512GB of PCIe storage (which is apparently updated to PCIe 3.0 x4), depending on the SKU.
The biggest update comes in the form of Intel's 6th generation Skylake architecture Core M CPUs, switching from previous Core M CPUs based on Broadwell architecture. Currently, there are three SKUs to choose from, featuring Core m3-6Y30 (1.1/2.2GHz), Core m5-6Y54 (1.2/2.7GHz) or Core m7-6Y75 CPU (1.3/3.1GHz).
All three are dual-core CPUs and come with the same Intel HD Graphics 515 (GT2) GPU with 24 EUs and 300MHz base and up to 950MHz Turbo Clock. All three SKUs also feature 8GB of LPDDR3-1866 memory, which should give it a slight boost from LPDDR3-1600 available earlier.
Apparently, Apple has also squeezed in a better 41.4Wh battery which should, in combination with more efficient Skylake Core M CPUs, increase the battery life.
The pricing should remain the same as with earlier available Broadwell 12-inch Macbook, so you are looking at US $1299 for the base version with 256GB of storage, US $1599 for the Core m5-6Y54 version with 512GB of storage, and US $1749 for the top-end Core m7-6Y75 version with 512GB of storage.
Two new Macbook 2016 SKUs are already available for pre-order at Apple's website while the top-end model will apparently be available at a later date.