Samsung is internally working on an Exynos 9610 successor called the Exynos 9630 to power its next generation mid-range Galaxy A51 and A71 smartphones. The Exynos 9630 is expected to be fabbed on the 8nm process and could bring in improvements to power consumption and performance over the current generation.
https://www.notebookcheck.net/8nm-Exynos-9630-rumored-to-feature-in-2020-Samsung-Galaxy-A51-and-A71-mid-range-devices.428627.0.html