This blog is updated daily.
A general description is here.
Additional non-API entry points added to those reported by ‘R CMD check’: ‘IS_LONG_VEC’, ‘PRCODE’, ‘PRENV’, ‘PRVALUE’, ‘R_nchar’, ‘Rf_NonNullStringMatch’, ‘Rf_StringBlank’, ‘SET_TYPEOF’, ‘TRUELENGTH’, ‘XLENGTH_EX’, and ‘XTRUELENGTH’.
Package ‘citation()’ results auto-generated from the package metadata now also provide package DOIs for CRAN and Bioconductor packages.
‘as.data.frame.list()’ gets new option ‘new.names’ and now preserves ‘NA’ names, thus fixing the ‘format()’ method for data frames, and also bug PR#18745. Relatedly, the ‘format()’ method gets option ‘cut.names’.