NSF anticipates the release of a revised version of the NSF Proposal & Award Policies & Procedures Guide (PAPPG) (NSF 15-1) this Fall. This revised PAPPG is effective for proposals submitted, or due, on or after December 26, 2014. The PAPPG is consistent with, and, implements the new Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards (Uniform Guidance) (2 CFR § 200).