NSF has instituted significant changes to the Proposal and Award Policies and Procedures Guide, including a requirement for Special Information and Supplementary Documentation.  NSF 11-1 January 2011 is effective for proposals submitted on or after January 18, 2011.  Some of these changes are listed below in Item # 15.   Proposals due before this date should follow the guidelines in NSF 10-1  http://www.nsf.gov/publications/pub_summ.jsp?ods_key=nsf101