IMO this is a positive development. It reminds me of the bit that the Vatican astronomer wrote about faith, that faith is what you rely on when you do not have all the answers. The Vatican observatory brings science into the church so that it can better focus on areas that need to rely on faith and put settled areas behind it. In other words the Vatican observatory is an acknowledgement that the church's positions change over time.
There is an article on the Detroit News web site about the church reconsidering its position on gay marriage. In the article a conservative is quoted as asking what their children should now be told.
How about, "We learned something."
http://www.detroitnews.com/story/new...mily/17180813/