From Pro Football Talk:
Ryan Cardinal of Vikings.com (in some parallel universe, there’s a Ryan Viking working for the Cardinals), has found via TVGuide.com that ESPN2 will air an “NFL Schedule Release Special” on Tuesday, April 13, at 7:00 p.m.
Cardinal also points out that, more immediately, the preseason schedule will be released on Wednesday at 3:00 p.m. ET.
It remains to be seen whether the league will announce in advance of April 13 the Week One prime-time games or the Thanksgiving games. In past years, those contests were announced as part of the annual league meetings. This year, the announcement was delayed by a day and then scuttled completely.