A complete re-write of the Rule Book and Decisions that takes effect in 2019 has been announced. It is too extensive for me even to begin talking about here.
See this summary for starters. I am sure you can find others if you browse the Net.
Best news of all: An optional Local Rule has been added that allows a player whose ball went OB to drop near the point where it went out, taking a two-stroke penalty. It’s about time!!!!!