Who knows what happened to all the babies' souls that had supposedly been in limbo up until that point. It makes absolutely no sense to me how people can believe in religion when things like this are fairly common.
As the pope is quoted in the article, the idea of limbo was only a hypothesis. The clarification by the Vatican is basically saying "we don't know what happens to unbaptized babies that die but we have faith in the mercy of God and trust in his mercy where these babies are concerned."
The pope isn't a magical being who can just eliminate with the stroke of a pen a metaphysical location as your comment suggests you believe. He can only attempt to understand and communicate his understanding of the mysterious workings of God to his followers.
And not a lot of information on who made up the small sample. Pretty much like every other "newsworthy" study that the media gloms onto. Makes a good headline but a quick read into what facts they decide to share and it is obvious that the results are inconclusive at best.
But it sure brings out the arm chair theologians! I didn't know so many geeks were so deeply involved in the study of comparative religion. The level of intellectual theological discourse is mind boggling.
The reward for working hard is more hard work.