Samsung has announced the Exynos 5430 SoC using their 20 nm HKMG process. This SoC will be featured inside of Samsung's recently announced Galaxy Alpha.
Introducing the new Exynos 5 Octa (5430). Built on Samsung’s 20nm process, to drastically lower power consumption. http://t.co/R2OhDh6k33— SamsungExynos (@SamsungExynos) August 14, 2014
The Exynos 5430 will feature four Cortex A15 cores (@ 1.8 GHz) and four Cortex A7 cores (@ 1.3 Ghz) in a big.LITTLE configuration. The SoC will also make use of ARM's Mali-T628MP6 GPU.
The specifications are nothing ground breaking (similar performance to Qualcomm's Snapdragon 801), but the move from 28 nm to 20 nm is the focus. This shift should offer the SoC a considerable decrease in power consumption.
In the case of the Galaxy Alpha (international version), the SoC should be paired with Intel's XMM7260 modem (cat. 6 LTE-A).