That's how the president-elect plans to take the oath of office. He confirmed that he would include his middle name in an interview yesterday:
“I think the tradition is that they use all three names, and I will follow the tradition, not trying to make a statement one way or the other. I'll do what everybody else does.”
According to Mike Allen, that's not actually true, but it's still encouraging that Obama no longer has to hide his own middle name.