Собственно, сабж: https://www.phoronix.com/news/LLVM-Flang-New-To-Flang .
LLVM's modern Fortran compiler «flang-new» has now been renamed to «flang» for next year's LLVM 20 update. ... This renamed flang-new to flang is in LLVM Git ahead of the LLVM 20.1 release expected around March of next year. We'll see what more Fortran/Flang improvements land for that front-end compiler in the coming months.