Some people call this flip-flop, some called contradiction. For me, I think he’s just plainly covering his tail. Sadly speaking, to do so in an informative age is rather… dumb.

Ealier today: Parliament won’t be dissolved today, says PM

Later today: Parliament dissolved, elections on

On the other hand, you may view this two documents (news1, news2) and see the difference. Why such an update is necessary I wonder.