But press sec. Jay Carney won’t say when. From POLITICO:

President Barack Obama, facing increasing pressure from Congress to clarify the U.S. military’s mission in Libya, will address the nation in the “very near future” but not before today, White House press secretary Jay Carney said Friday. In his briefing with reporters, Carney declined to provide details, and would not say whether the president will make a formal White House speech or make remarks in another venue, such as his weekly address to the nation. “I’m not going to give you a time or a day,” he said. Obama — who offered a brief explanation for his decision to support an expanded no-fly zone a week ago while touring South America — has been waiting for the U.S. to hand off primary command and combat responsibilities to NATO before charting the course forward to the American people, administration officials have said. On Thursday, Secretary of State Hillary Clinton announced that NATO will take the lead on air missions against Col. Muammar Qadhafi’s forces beginning Saturday.