The new processor is built using the 10 nm process and has a tri-cluster configuration with two Cortex-A73, four Cortex-A53, and four Cortex-A35 cores. First devices to use it are expected to debut in the second quarter of 2017.
http://www.notebookcheck.net/MediaTek-Helio-X30-deca-core-processor-now-available.199710.0.html
quadcore is legacy :) But do they care about single core performance? Are the cores similiar or differentiated by performance/effectivity as big.little?