- All Retail Games Will Need To Be Installed

- PS4 does not require a persistent internet connection to play games, so users can play single-player titles offline at any time. For titles with online multiplayer functionality, an internet connection and a PlayStation Plus membership will be required to play online.

- Authentication is not required for PS4 disc-based games under any scenario.

- Neither digital nor disc-based games will be region locked

- No Audio CD Playback or MP3 Playback

- PS4 will not restrict players from playing disc-based used games. When a gamer buys a PS4 disc, they have right to use that copy of the game, so they can trade-in the game at retail, sell it to another person, lend it to a friend, or keep it forever. Furthermore, users will not have to go through activation steps or be charged usage fees when playing used disc-based games on their PS4 system

- No DLNA Support for PC Media Servers

- No External Drive Support

- No 4K Output Support

- Sony Offering Blu-ray / DVD "One-Time Activation" Disc By Mail

- Day One Software Update Can Be Installed via USB

- Upgrade PS3 Games (CoD: Ghosts, BF4, Assassin's Creed 4) To PS4 for $9.99

- PS4 does not require a persistent internet connection to play games

- PS4 supports up to 2,000 online friends, an expansion of the 100 friends limit for the PS3 system