This blog is updated daily.
A general description is here.
For ‘tiff(type = "windows")’, the numbering of per-page files except
the last was off by one.
Loading package ‘stats’ (which is done for a default session) would
switch line endings on ‘stdout’ and ‘stderr’ from CRLF to LF. This
affected ‘Rterm’ and ‘R CMD BATCH’.
The compatibility function ‘x11()’ had not kept up with changes to
‘windows()’, and issued warnings about bad parameters. (PR#14880)
The ‘Sys.glob()’ function didn't handle UNC paths as it was designed to
try to do. (PR#14884)
There are two new environment variables which control the defaults for
command-line options.
If ‘R_WIN_INTERNET2’ is set to a non-empty value, it is as if ‘--internet2’ was used.
If ‘R_MAX_MEM_SIZE’ is set, it gives the default memory limit if ‘--max-mem-size’ is not specified: invalid values being ignored.
A few people have reported problems with junctions, although they were
tested on Windows 7, XP and Server 2008 machines. Setting the
environment variable ‘R_WIN_NO_JUNCTIONS’ to a non-empty value (e.g. in
‘~/.R/check.Renviron’ will force ‘R CMD check’ to use copies instead.