The development version of the read.sas7bdat function (in the sas7bdat package) now reads field labels and formats. In addition, errors of the type "found <x> <type> subheaders where 1 expected" are now a thing of the past. These improvements are largely due to work by Clint Cummins. The function also works on some files generated

Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).