There are only 4 stories there, they are good, but I'm pretty sure that most, if not all of them, were there before.
And there's now a 30 second video which is ok, but there's only so much a 30 second video can say. Also, it has the woman dropping papers at her desk at the office - giving a bit of an unrealistic idea about how likely it is for a person with ME/CFS to even be at an office.
So, as updates go, it's pretty minor. That said, the CDC ME/CFS material taken as a whole, while having some flaws still, is incredibly useful for changing how the medical profession sees the illness. I'm glad the CDC is tweeting to bring attention to it. Maybe they could add some more stories?