The new chip will begin sampling in March and is based on the new ARMv8 architecture. It comes withfour Cortex A53 cores and a Vivante GC5000 GPU with support for 1080p display and recording.
http://www.notebookcheck.net/Marvell-reveals-its-first-64-bit-mobile-processor-the-ARMADA-PXA-1928.112329.0.html