According to Adam Schefter of ESPN, the NFL will release its preseason schedule on Thursday.
NFL will release its preseason schedule this afternoon. Regular-season schedule comes later this month.
— Adam Schefter (@AdamSchefter) April 4, 2013
The regular season schedule is presumed to be released on Tuesday April 16.
As usual, the Packers will play two home and two away games during the preseason.
Included in the "gold package" or Milwauakee season-ticket holders will be the 64th annual Upper Midwest Shrine Game. And as part of the "green package" will be the 53rd annual Bishop's Charities Game.
Typically, exact dates are not initially announced with the release of the NFL's preseason schedule except for those appearing on national television. The NFL will indicate Week 1, Week 2, etc., with precise dates and times announced later.