In addition to a day one patch for the PS4, it seems you will have to connect your console to the internet so you can utilize DVD and Blu-ray playback.
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.