We are pleased to announce the release of PETSc version 3.16 at https://petsc.org/release/download/ <https://petsc.org/release/download/> A list of the major changes and updates can be found at https://petsc.org/release/docs/changes/316 <https://petsc.org/release/docs/changes/316> The final update to petsc-3.15 i.e petsc-3.15.5 is also available We recommend upgrading to PETSc 3.16 soon. As always, please report problems to [email protected] <mailto:[email protected]> and ask questions at [email protected] <mailto:[email protected]> This release includes contributions from Albert Cowie Alexei Colin Barry Smith Blaise Bourdin Carsten Uphoff Connor Ward Daniel Finn Daniel Shapero Erik Schnetter Fande Kong Hong Zhang Jacob Faibussowitsch Jed Brown Jeremy Tillay Joe Wallwork Joseph Pusztay Jose Roman Junchao Zhang Koki Sagiyama Kyle Gerard Felker Lawrence Mitchell Leila Ghaffari Lisandro Dalcin Mark Adams Martin Diehl Matthew Knepley Matt McGurn Moritz Huck Mr. Hong Zhang nathawani olivecha Pablo Brubeck Patrick Sanan pbrubeck Pierre Jolivet Richard Tran Mills Rylee Sundermann Sajid Ali Sam Reynolds Satish Balay Scott Kruger Stefano Zampini Toby Isaac Todd Munson Vaclav Hapla Yang Zongze Zhao Gang and bug reports/patches/proposed improvements received from Adrian Croucher Alexandre Halbach Bret K. Stanford Chonglin Zhang (@zhangchonglin) cleaf "Constantinescu, Emil M." Damian Marek Daniel Stone Danyang Su David Salac dazza simplythebest Drew Parsons (@RizzerAtGitLab) [email protected] <mailto:[email protected]> Emily Jakobs Emmanuel Ayala Eric Chamberland (@eric.chamberland) Fande Kong Getnet Betrie Haplav hg Iman Datta "Isaac, Tobin G" Jacob Faibussowitsch Jeremy Kozdon Jin Chen Junchao Zhang Lars Corbijn Lawrence Mitchell Lisandro Dalcin "Lundvick, Nick" Mark Adams Martin Diehl Matthew Otten Milan Pelletier Mr. Hong Zhang Nan Ding Pierre Jolivet Pieter Ghysels Qi Tang @qiuchangkai Rezgar Shakeri Rory Johnston Sam Fagbemi Saransh Saxena Sergio Bengoechea Stephen Jardin TAY wee-beng Victor Eijkhout Xiaoye S. Li Yang Liu As always, thanks for your support, Barry