I found a interesting article on Gamasutra. Here are some things that really stood out for me in the article.
There are six key components. Shorrock began with ?Services/VOD? which delivers full-length movies, television programs, or music direct to users. ?Obviously we want to take huge advantage of our member?s capabilities, and of the storage capacity.? [...]
"PlayStation Network Expansion Plans" - 11.05.07