A leak suggests that the Exynos 1000 will use the Qualcomm Snapdragon 875's 1+3+4 core configuration. Both chips will likely use modified versions of ARM's Cortex-X1 super core and Cortex-A78 cores. The move could help Samsung bridge the ever-widening gap between its in-house silicon and Qualcomm's offerings.
https://www.notebookcheck.net/Samsung-s-upcoming-Exynos-1000-SoC-will-use-the-same-core-configuration-as-the-Qualcomm-Snapdragon-875.494632.0.html