This morning’s print edition of the New York Times carried this announcement (emphasis mine):

To Our Readers
Starting Monday, The Times will reduce the width of its pages by an inch and a half, to the national newspaper 12-inch standard. The move will cut newsprint expenses and, in some printing press locations, will make special configurations unnecessary. Slight modifications in design will preserve the look and texture of The Times, with all existing features and sections and somewhat fewer words per page.

So the “national newspaper” standard is now 12-inch pages, making the broadsheets just a little (10%) less broad (matching their world view).