Dear PETSc users, we would like to invite you to join us for a PETSc User Meeting held in Vienna, Austria, on June 28-30, 2016. The first day consists of tutorials on various aspects and features of PETSc. The second and third day are devoted to exchange, discussions, and a refinement of strategies for the future with our users. We encourage you to present work illustrating your own use of PETSc, for example in applications or in libraries built on top of PETSc. Registration for the PETSc User Meeting 2016 is free of charge. We can host a maximum of 120 participants, so register soon (but no later than May 1). We are still in the process of acquiring money for providing student travel grants; prospective sponsors, please contact us. Website with full information: http://www.mcs.anl.gov/petsc/meetings/2016/ We are looking forward to welcoming you in Vienna! Karl Rupp and the PETSc team