Speaking for myself, I am not surprised at all. As the article mentions, this is a view that has been widely accepted by the leaders of the Church for some time. In fact, in case you weren't aware, it was a Catholic priest who came up with the Big Bang theory in the first place.

Evolution is a bit of a trickier issue for some, since if we humans are descended from apes, how could we be descended from two human beings, as the Church teaches, and at what point would we have been considered "human enough" to be given souls? As a result, many Catholics accept microevolution, but reject macroevolution. There are still many Catholics who take the creation story literally, but I consider that an untenable position, since it contradicts current scientific knowledge and the two creation stories contradict each other if taken literally. Other Catholics, including myself, believe the generally accepted theory of evolution from microbes to complex organisms to humans.

I couldn't tell you what percentages of Catholics accept one stance or the other, however. Since the Church has stated that Catholics are free to accept any of them, we are all over the map in this respect.