See http://cran.r-project.org/web/packages/sos4R/index.html.
This is a bugfix release to get the package back on CRAN since it was kicked out because of using the deprecated .find.packages(). This function was used in the helper functions sosCheatSheet(), sosChanges()and sosNews() to open up the cheat sheet document and CHANGES/NEWS files from R command line and is now replaced by find.packages(), which is part of the actual public API.
My apologies for the inconvenience caused by this delay – R 3.0.0 is really the version to use right now – but I wanted to get some other bugs fixed and some new features in for the next release, which did not work out so far.
As a lesson from this I now created a proper SVN structure with a branch 0.3 for the current development and reverted the trunk to the version currently on CRAN: https://svn.52north.org/svn/geostatistics/main/sos4R/. This will allow future bugfixing without interfering with currently broken development versions.
