[R-SIG-Mac] R 4.1.0 macOS release update

[Simon Urbanek]

For those impatient, the R 4.1.0 releases are available from the base (Intel) and big-sur-arm64/base (arm64) directories (use https://mac.R-project.org/bin/macosx/ to avoid mirror delays):

SHA1(base/R-4.1.0.pkg)= df4d6fc17bbf6b7a27d4e015c0084d4bb6f7b428
SHA1(big-sur-arm64/base/R-4.1.0-arm64.pkg)= 7354c1b249cab9bafea6ae67c73563303a05fa17

However, the package re-builds based on the releases are not yet finished therefore I have decided not to link the releases from the main page yet as users are likely to want to install packages and may forget to re-install them in a day or so to get the released packages. The package binaries should be available likely in the next 24h at which point the main page will be updated.

Cheers,
Simon