We are pleased to announce the release of the PETSc 2.2.0 parallel software libraries for the implicit solution of PDEs and related problems. There is one major change. The SLES component is now GONE, all of its functionality can be obtained through the KSP object. See http://www.mcs.anl.gov/petsc/petsc-2/documentation/changes/220.html for a list of changes in this release. Though we still support the editing of $PETSC_DIR/bmake/$PETSC_ARCH/ files for installing PETSc, we now also have a (semi) automatic configuration tool that automatically sets up the configuration files: see http://www.mcs.anl.gov/petsc/petsc-2/documentation/installation.html As always, please send bug reports, questions, and requests for new features to [email protected]. Thanks for your continued support. The PETSc developers, Satish, Kris, Bill, Dinesh, Matt, Lois, Barry and Hong