As announced today, The new R 2.12.0 is now available in source form, and you'll soon be able to download R as an installable binary for Windows, Mac and Linux from your local CRAN mirror. In the meantime, if you're not building R yourself you can check out the list of new features in the NEWS file. As usual, there's a raft of new functions and fixes, but the ones that stood out for me were:

- Improved handling of times/dates (particularly when used in charts)
- Easier to create charts from tables (you can use points, lines, and plot with table objects)
- Improvements to K-means clustering
- Improved accuracy when calculating in the extreme tails of some probability distributions
- Improved convergence detection for constrained optimization
- Several improvements related to the interactions of S3 and S4 objects
- An interesting new system for creating reference-based classes (no need to copy data in objects)
- A new utility "adjustcolor" for creating translucent color schemes

More details in the official announcement linked below.

R-announce mailing list: R 2.12.0 is released

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