Later next week, we will be performing an update to the stable branch for swift-llvm, swift-clang, swift-compiler-rt, swift-lldb repositories.
We will be verifying the update on Swift CI with macOS and Ubuntu platforms.
For those supporting other platforms if you would like to test against the stable merge before it lands please check out the following branches:
swift:swift-5.1-branch (To be created)
swift-lldb:swift-5.1-branch (To be created)
I will update this topic before we perform the operation.