Unless of course you intend to use your PS4 to watch your Blu Ray and DVD movies.
This news comes from the announcement of a day-one patch for the PlayStation 4, though it is unclear whether the patch is explicitly required to enable the features listed below. We do know, however, that "at first time use, users must connect to the internet" before Blu-ray and DVD playback will function, according to the press release.
Regardless, a launch-day PS4 will be capable of Remote Play through the PlayStation Vita, second screen experiences through PS Link and the PlayStation App on mobile, Twitch/Ustream streaming functionality and game DVR capabilities will all be available day-one. Users will also start out with the ability to play games as they download, use party chat, log-in using facial recognition via PlayStation Camera, navigate the home screen with voice commands, play games online and watch Blu-ray/DVD discs.
No big deal in and of itself, it's just funny that after they made themselves heroes to people with no internet/horrible internet at home, (yes they do exist, some people are in remote enough areas to still have dial up!) by not requiring internet, they've made a feature that same set of people are very likely to make use of, the DVD and Blu Ray playback, in-acessible without an update, and honestly, I cannot fathom a single good reason why that feature would simply not function at all without an update.
Maybe one of the launch day games like Killzone or Knack has the update on the disc for those folks.