We are pleased to announce the release of PETSc version 3.10 at http://www.mcs.anl.gov/petsc The major changes and updates can be found at http://www.mcs.anl.gov/petsc/documentation/changes/310.html We recommend upgrading to PETSc 3.10 soon. As always, please report problems to [email protected] and ask questions at [email protected] This release includes contributions from Adam Denchfield Alex Lindsay Alp Dener Andreas Selinger Barry Smith Dave May Ed Bueler Fande Kong Forster, Matthew (UK) Hong Zhang Hong Zhang Jakub Kruzik Jed Brown Joe Wallwork Jose E. Roman Junchao Zhang jwallwork23 Karl Rupp Lawrence Mitchell Lisandro Dalcin Mark Adams Matthew G. Knepley Maxime Pigou Michael Dunphy Min RK Patrick Farrell Patrick Sanan Pierre Jolivet Richard Tran Mills Satish Balay Scott Kruger sepideh Siegfried Cools Stefano Zampini Toby Isaac Todd Munson Václav Hapla Valeria Barra and bug reports/patches/proposed improvements received from Aaron Krämer Adrian Croucher Ali Reza Khaz'ali Anthony Paul Haas Anthony Ruth "Appel, Thibaut" Augustinas Stepšys Brad Aagaard Brian Thomas Weston Danyang Su Drew Parsons Eric Chamberland Fabian Jakub Fande Kong Febrian Setianto Forster, Matthew (UK) Frank Hulsemann Gaetan Kenway Garth Wells Gernot Plank "Hammond, Glenn E" Helgad Asdis He Zhong Jaroslaw Piwonski (CAU) Jed Brown Jose E. Roman Junchao Zhang "Klaij, Christiaan" Lin Bo Peter Marco Tiberga Maria Zhukova "Marin, Oana" Marius Buerkle Mark Adams Michel Schanen Mike Wick Mirko Hahn Norbert Podhorszki "Nourgaliev, Robert Nr" Octavio Castillo Reyes Patrick Sanan Patrick Zarnas Pedro Marcelino Philip C. Rot Pierre Jolivet Praveen C Randall Mackie Richard Tran Mills Rongliang Chen Santiago Andres Triana "Schaferkotter, Michael R CTR FNMOC, N5" Sébastien Gilles Serban Maerean Serge Van Criekingen Seung-Hoe Ku Stefano Zampini Syam Vangara Tim Steinhoff Todd Munson Tristan Konolige UNN-TOC Wesley Vaclav Hapla VEYS Stéphane Victor Eijkhout Widodo Samyono Youjun Hu zakaryah As always, thanks for your support, Barry