Julia v1.0-rc1 is now available

I know I read somewhere that work was being done on having Julia use a more up-to-date LLVM, and I left with the impression that it’d switch before 1.0. The README still says 3.9 though; is the plan to switch some time later on a minor version? LLVM 3.9 is currently being packaged on my system solely for Julia, and it’d be really nice to eliminate that.