What is the intent of a statement like this?
To reaffirm the teaching of the Church. As to WHY NOW, there's a good discussion of this going on at catholic.com. I refer you to http://forums.catholic.com/showthread.php?t=167828 starting with post #21 (I'd rather not copy posts by others verbatim on this board)
Apparently I'm not doing a very good job at expressing myself, so I'll ask it this way:
Does the Catholic Church believe that non-Catholic Christians have a place in Heaven?
If so, why all the fuss about "proper/improper"?
And yes, I read through the posts on the link you gave me. It seems that even Catholics are disagreeing amongst themselves as to the meaning of the Pope's statement.