FEMA has a maintenance plan for the Risk MAP guidelines and standards and issues updates on a semi-annual basis.

Fall Maintenance Plan and Standards Public Review
The Federal Emergency Management Agency maintains guidelines and standards to support the Risk Mapping, Assessment and Planning program. These guidelines and standards define the specific implementation of the statutory and regulatory requirements for the National Flood Insurance Program. These also outline the performance of Flood Risk Projects, processing of Letters of Map Change and related Risk MAP activities. More information is available at FEMA.gov.
FEMA has a maintenance plan for the Risk MAP guidelines and standards and issues updates on a semi-annual basis. This notice provides information about the fall semi-annual update, expected to be released November 2016.
This update includes routine updates and ongoing transformation of legacy guidelines and specifications to produce new guidance documents that align with the current structure of the Risk MAP program.
In addition to this routine maintenance, FEMA plans to issue new and updated standards, guidance documents, technical references and related templates to address recommendations from the Technical Mapping Advisory Council, a federal advisory committee that advises FEMA on the flood mapping program. The TMAC changes for November will address the recommendations that FEMA:

document the accuracy of elevation data used for modeling and mapping in a way that is easily accessible to users;
periodically review new publicly available statistical models;
provide more guidance on the selection and use of various models for flood mapping; and,
assess the cost impact of new requirements and provide guidance to consistently address the impact. This will be accomplished mainly through process changes in the standards and guidelines maintenance process.

Click here for a summary of the proposed changes to standards, guidance and related documents.
The Policy for Flood Risk Analysis and Mapping comprises the standards for practitioners of the Risk MAP program. As part of the guidelines and standards maintenance cycle, FEMA provides an opportunity for stakeholders to review and comment on proposed changes to standards. There are 13 proposed changes to standards included in the summary.
If you have feedback about FEMA’s guidelines and standards, submit comments or suggestions by email to FEMA.GS@riskmapcds.com.