It was announced today that the next update to R, version 2.9.0, is scheduled for release on April 17, 2009. According to the updates on the R development RSS feed, planned improvements include:
- enhancements several graphics functions, including bxp, barplot, plot.ts and legend
- improved accuracy for some functions, including cumsum and cumprod
- improvements to package installation on many platforms
- many improvements to handling of Rd documentation files
- a new, efficient function grepl works like grep but returns a logical vector
- simulate now provides for simulation of generalized linear models and weighted fits
- a new function poisson.test for exact tests of rates and ratios
- the Matrix package becomes an official part of the R distribution as a recommended package
- many other improvements and bug fixes
