Hot from the press! (April 10, 2015)
Hadley Wickham and the RStudio team (who brought u dplyr and ggplot2!) released two new packages for reading in data: readr package for reading text data, and readxl package for reading excel into R. In tests they outperformed existing packages for speed (up to 200 times faster!). Make sure to switch ASAP!
By: David Smith for Revolutions Blog