http://enterpriselabeling.com/2013/03/14/usps-moving-toward-requiring-the-use-of-intelligent-mail-barcodes-on-all-commercial-parcels/
Since January 28, mailers looking to take advantage of the discounted "automation prices" offered by USPS have been required to use the Intelligent Mail barcode.
Now, it seems the agency is preparing to require the use of the new barcodes on all commercial parcels. On February 26, the Postal Service published a pertinent notice in the Federal Register, informing mailers that it is "exploring the advisability of requiring the use of Intelligent Mail package barcodes (IMpb) or unique tracking Intelligent Mail barcodes (IMb) on all commercial parcels."
The organization said it would expect to implement the new standards "on or about July 28, 2013." USPS offered a brief explanation of the rationale behind its actions by pointing to the benefits associated with the "intelligent" barcodes.
"Mailers will benefit from the tracking services provided with IMpb, both from improved service performance and from more efficient postal operations," the notice said.
The notice in the Federal Register was introduced as a way to provide stakeholders with an opportunity to submit comments before the beginning of a final rulemaking process. The agency will be accepting comments on the proposal until March 28, 2013.