Daily News about R-devel
This blog is updated daily.
A general description is here.
CHANGES IN R-devel SIGNIFICANT USER-VISIBLE CHANGES
Packages need to have been installed under this version of R. (Pro tem, this is considered to be R-devel from April 2012.)
CHANGES IN R-devel NEW FEATURES
‘loadNamespace()’ allows a version specification to be given, and this
is used to check version specifications given in the ‘Imports’ field
when a namespace is loaded.