This blog is updated daily..
A general description is here.
term.formula(simplify = TRUE) now does not deparse the LHS and so preserves non-standard responses such as `a: b` (requested by Sundar Dorai-Raj).
That R CMD check makes use of a <pkg>/tesscripts/Examples/<pkg>-Ex.Rout.save file as a reference result is now documented in 'Writing R Extensions'.