Interpretation: The Obama administration may be open to revising or clarifying some of the new standards it seeks to impose on new coal-fired electric plants. The proposed regs are in addition to those already being used to force utility operators to abandon many older coal plants, and to do so often many years ahead of previous schedules with no immediate means to replace lost generation capacity.
I'm not seeing a major policy shift, and maybe not even a little one. Looks more like the Obama team simply wants to appear more open-minded, and thereby negate some of the political baggage the rule-making carries until after the November elections.
Remember what Mr. Obama previously told the Russians? "This is my last election ... After my election I have more flexibility."