While we have seen anything official it looks like Sony will be sticking with their existing online according to PS3Focus
I'm a little disappointed by the news as I was hoping Sony was going to
do something new and cool with their online service but it looks like
it is MOTS (more of the same) for Sony's online component. I
guess the good news is that it's still free but I was hoping they would
do something at least semi-new given the new functionality in Xbox Live.