This blog is updated daily.
A general description is here.
Packages can specify in their ‘DESCRIPTION file’ a line like
ForceBiarch: yes
to be installed on Windows with ‘--force-biarch’.
The transitional support for installing packages without namespaces (required since R 2.14.0) has been removed. ‘R CMD build’ will still add a namespace, but a ‘.First.lib()’ function will need to be converted.
‘R CMD INSTALL’ no longer adds a namespace, and a ‘.First.lib()’ function in a package will be ignored. [The latter as from ca Dec 21.]
Packages without a ‘R’ directory and no ‘NAMESPACE’ file can still be installed.
The entry points ‘rgb2hsv’ and ‘hsv2rgb’ have been migrated to package ‘grDevices’ and so are no longer available.
Entry point ‘rcont2’ has been migrated to package ‘stats’ and so is no longer available.
On a 64-bit Windows platform with enough RAM, ‘R_alloc’ can now allocate up to just under 32GB like other 64-bit platforms.