The DNC just released this statement (via Ben Smith):

WASHINGTON, DC--Today the Democratic National Committee and Obama for America unveiled a bold new initiative to involve the American people in the development of the Democratic National Platform. This year, for the first time, voters will have the opportunity to take part in Platform Meetings in all 50 states to help shape the Democratic Platform. DNC Chairman Howard also announced that Governor Napolitano will chair the Platform Drafting Committee. Michael Yaki will serve as National Platform Director and Karen Kornbluh will be the Principal Author of the Platform.

Napolitano of course is the subject of this American Prospect piece and is swiftly becoming a leading VP contender. Her prominence on Platform Committee shouldn't be seen as anything more than respect for a popular governor, but it does reveal Napolitano's growing role on the national scene.