This document provides a list of active IV-MTR work to be as well as items completed in the current fiscal year. *Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.
Effective November 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L007, L012, L201, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the November 1, 2026, effective date through December 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22713.
