Judging by the latest leaks, Samsung is most likely preparing major overhauls for next year's Galaxy S10 / Note 10 high-end devices. Apparently, Samsung is planning to begin production on the LPDDR5 and UFS 3.0 chips later this summer and this could significantly boost the overall performance for the 2019 models. Moreover, it looks like the Galaxy S10 could finally get 4K video recording.
https://www.notebookcheck.net/Samsung-will-begin-LPDDR5-and-UFS-3-0-production-in-2H-2018.308964.0.html