However in a recent announcement by Samsung (via The Android Soul), the company has revealed that mass production of the chipset has already begun, and in the process they revealed additional details, such as its power efficiency, which Samsung claims is 15% more efficient compared to the first-gen 10nm process.
According to Samsung, “10LPP process technology allows up to 10-percent higher performance or 15-percent lower power consumption compared to its first generation 10nm process technology, 10LPE (Low Power Early).” What this means is that the Exynos 9810 will be faster and more power efficient, which means that Samsung could technically keep the battery of the Galaxy S9 the same, but because the chipset is more power efficient, it should be able to eke out more battery life.
In any case we expect that more details should be revealed over the weeks/months leading up to the Galaxy S9’s reveal, which last we heard could take place in January.