CdA figure change?

Have they updated the rider CdA figure relative to weight and size?

I am curious as I now struggle to pull away from others on the downhills whereas before I could catch up some of the time lost on the hills.

I was going downhill at 335W(on TR so constant) against someone doing around 300-310W and I am around 30kg heavier yet I was actually losing a few seconds from the hilltop to the finish line.

I have noticed a change since about the start of April.