SC13 has changed the deadline for workshop proposals. Submissions are due on January 31, 2013. We welcome proposals for independently planned full–, half–, or multi–day workshops that complement the overall technical program events, expand the knowledge base of its subject area, and extend its impact by providing greater depth of focus. This year, we have moved the submission deadline ahead in order to ensure that successful proposers have ample time to prepare for their event. Proposals for workshops will be reviewed with an eye toward providing interaction and in–depth discussion of stimulating topics of interest to the HPC community. Workshop proposals due: January 31, 2013. For more information on workshops, please visit http://sc13.supercomputing.org/content/workshops.