The PlayStation 4 will not need any form on on-line connection to function and ofcourse, it has no DRM restriction. These are direct opposite to the philosophy of Xbox One and what the it stands for.
140 PlayStation 4 is confirmed to be in development for the PS4, 30 of these games are being developed by Sony Worldwide Studios and around 100 games would be available in the PS4 first retail year. 40 of these games are going to be exciting exclusives and great new ip’s. Jack Tretton took time to confirm the numbers during the E3 2013 conference.