Courtesy of CRANberries, there is also a diffstat report for 0.3.4.4 relative to 0.3.4.3 As always, more detailed information is on the RcppArmadillo page. Questions, comments etc should go to the rcpp-devel mailing list off the R-Forge page.
Changes in RcppArmadillo version 0.3.4.4 (2012-11-15)
Upgraded to Armadillo release 3.4.4
fix for handling complex numbers by sparse matrices
fix for minor memory leak by sparse matrices