We took a higher resolution picture of the 380k year old universe than what we had before. From this, we got slightly more accurate numbers for "matter-dark matter-dark energy" ratios, which we, in turn, used to get more accurate values for universe's expansion rate and age. So the ratios where a couple of percents off, the expansion rate is a bit slower and universe about 20-30 million years older than we thought.
The thing that's gotten people interested is that in the pictures there's a visible, major difference in structure depending on which direction you look at, while standard model suggest both directions should look quite similar. Hence we know something is off somewhere in our model or assumptions and are now looking into it.