The website of the Reagan's foundation lists the issuance of a U.S. Postal Service commemorative stamp among the planned events for the Reagan Centennial Celebration.
Although no official announcement has been made, the U.S. Postal Service hasn't denied the reports, saying instead it will announce its 2011 stamp schedule in August.
Reagan's first postal tribute, a 37 cent stamp, appeared in 2005; it was reissued less than a year later when first-class mail rose to 39 cents.