This is a potential security issue, you are being redirected to https://csrc.nist.gov.
NIST anticipates the release of Special Publication 800-53, Revision 4, Security and Privacy Controls for Federal information Systems and Organizations (Final Public Draft) on Tuesday, February 5th. The final public comment period will run from February 5th through March 1st. Final publication is expected by the end of April. NIST released a paper "The Role of the National Institute of Standards and Technology in Mobile Security".