https://developer.apple.com/videos/play/wwdc2019/409/

13.x
https://releases.llvm.org/13.0.0/docs/ReleaseNotes.html
https://releases.llvm.org/13.0.0/tools/clang/tools/extra/docs/ReleaseNotes.html
https://releases.llvm.org/13.0.0/tools/clang/docs/ReleaseNotes.html
    https://www.opennet.ru/opennews/art.shtml?num=55898
12.x
https://releases.llvm.org/12.0.0/docs/ReleaseNotes.html
    https://lists.llvm.org/pipermail/llvm-announce/2021-April/000092.html
    https://www.opennet.ru/opennews/art.shtml?num=54977
11.x
https://releases.llvm.org/11.0.0/tools/clang/docs/ReleaseNotes.html
    https://lists.llvm.org/pipermail/llvm-announce/2020-October/000089.html
    https://www.opennet.ru/opennews/art.shtml?num=53874
    https://tobias.hieta.se/llvm11-release
10.x
https://releases.llvm.org/10.0.0/docs/ReleaseNotes.html
    https://www.opennet.ru/opennews/art.shtml?num=52611
9.x
http://releases.llvm.org/9.0.0/docs/ReleaseNotes.html
    https://lists.llvm.org/pipermail/llvm-announce/2019-September/000085.html
    http://www.opennet.ru/opennews/art.shtml?num=51523
8.x
http://releases.llvm.org/8.0.0/docs/ReleaseNotes.html
    http://www.opennet.ru/opennews/art.shtml?num=50360
7.x
http://lists.llvm.org/pipermail/llvm-dev/2018-September/126230.html
http://releases.llvm.org/7.0.0/docs/ReleaseNotes.html
http://releases.llvm.org/7.0.0/tools/clang/docs/ReleaseNotes.html
http://releases.llvm.org/7.0.0/tools/clang/tools/extra/docs/ReleaseNotes.html
http://releases.llvm.org/7.0.0/tools/lld/docs/ReleaseNotes.html