Knowing May the EU have told her to shove the Checkers deal where the sun don't shine so she's gearing up for further capitulation.
Actually just watching PM Questions I think May is playing a blinder, she knew that the EU wouldn't accept Chequers deal but they have to be seen to be trying for a deal otherwise there'd be far more pressure for a new vote in case of a no deal. One thing is for sure the establishment can't accuse May of not trying to get a deal because she's bent over backwards to appear to be trying. I think the EU would ultimately refuse any deal apart from a full reversal of Brexit.