Not by Apple, but a Fortran compiler tuned for Apple Silicon is out now from NAG.

What they are saying is that: "It turns out there is hope that R will work on Apple silicon. A usable Fortran 90 compiler for Apple silicon will hopefully be available relatively soon, since the development version of GFortran already seems to be working (check-all passed for R including reference LAPACK/BLAS) and there is a strong need for such compiler not only for R, but any scientific computing on that platform." The "there is hope" part sends a message to me, that if I have to use R in the near future, or everyday even -as in my case - do not buy an Apple silicon mac yet.... What do you think?

Hi Guys, Here are some benchmark results leman and I just did: forums.macrumors.com/threads/data-science-r-and-spss-26-etc-under-rosetta-2-apple-silicon-m1.2269302/?post=29326680#post-29326680 R under Rosetta2 is basically 70% faster on average then on my i5 16GB RAM late 2017 MBPro