AP approved?

This morning, I got this message, it means AP was approved or other possibilities? Thanks.

Application Type: I131 , APPLICATION FOR USCIS TRAVEL DOCUMENT

Current Status: Document mailed to applicant.

On January 2, 2008 we mailed the document to the address we have on file. You should receive the new document within 30 days. If you do not, or if you move before you get it, call customer service.