From a New NARA Guidance Bulletin:
This Bulletin provides agencies with scheduling guidance on determining the appropriate age at which permanent records, regardless of their media or format, should be transferred into the legal custody to the National Archives of the United States.
This Bulletin applies when agencies submit new records schedules to the National Archives and Records Administration for approval. If an agency would like change the transfer date of an approved records schedule, the agency should utilize the process for Changes to Previously Approved Schedule Items. This guidance will apply to any proposed changes.
Read the Complete Bulletin