This blog is updated daily..
A general description is here.
The C code underlying base graphics is in the process of being migrated to the ‘graphics’ package (and hence no longer uses ‘.Internal()’ calls. This may require re-installing some S4-using packages (e.g. ‘timeDate’) which captured the old versions of the R interfaces.
For ‘R CMD check’, a few people have reported problems with junctions on Windows (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 copies to be used instead.
In package ‘parallel’, ‘clusterApply()’ and similar failed to handle a (pretty pointless) length-1 argument. (PR#14898)
Quartz Cocoa display reacted asynchronously to ‘dev.flush()’ which means that the redraw could be performed after the plot has been already modified by subsequent code. The redraw is now done synchronously in ‘dev.flush()’ to allow animations without sleep cycles.