We have a logged a few improvement in the NEWS. The changes are small and incremental, as the package is already in a great stable state for production use.
One of the biggest improvements is documentation clean up, and adapting the examples to use wrapr unpack/to multiple assignment notation. An example of the new documentation can be found here, and the larger tutorials are here.
Data Scientist and trainer at Win Vector LLC. One of the authors of Practical Data Science with R.