Rockchip announced a new 8-core mobile SoC yesterday. The RK3588 will feature four ARM Cortex-A55 cores and four ARM Cortex-A76 cores and will be manufactured on an 8nm process. Rockchip claims that the new manufacturing process will increase performance by up to 30% while reducing power consumption by 40%.
https://www.notebookcheck.net/Rockchip-s-8nm-octa-core-RK3588-set-to-debut-in-Q1-of-2020.419239.0.html