While most people were busy yelling about the travel ban (myself included), Trump quietly gave Steve Bannon more power:

Trump took steps Saturday to begin restructuring the White House National Security Council, adding the senior adviser to the principals committee, which includes the secretaries of state and defense. At the same time, Trump said his director of national intelligence and the chairman of the Joint Chiefs of Staff would attend only when “issues pertaining to their responsibilities and expertise are to be discussed."

...Which will be almost never, I'm sure.

ETA Feb. 11, 2017: According to The New York Times, Trump never actually read or was briefed on the content of this memorandum.