According to a notice posted on Federal Business Opportunies website:

The United States Postal Service is seeking information on beginning a Priority Mail Service Care Package program that would allow customers to send selected items to military personnel, college students, campers, the elderly, and others.  

These Care Packages will be supplied, packed, and shipped by interested companies, and target marketed to military personnel, students, campers, and their families via the U.S. Postal Service  web site (www.usps.com).     

The Priority Mail Service Care Package program is a way in which customers, through specific custom linkage to USPS.com, may find links to businesses that will fulfill and ship an assortment of items to whomever the customer chooses.  The customer would have an al a carte selection of items to choose from, and need only give the recipient address information and payment for all services in return for having these items shipped to a location they specify.  These packages would then be sent only through the US Postal Service.