Listed at iTunes on Wednesday were episodes of Chuck and Journeyman, two shows that premiered earlier this week.
NBC Universal touched off a public relations war when it announced that it would not renew its contract to sell digital downloads of its TV shows via iTunes. Apple responded by saying it would refuse to offer NBC's shows for the upcoming season.
But don't look for a full rollout of NBC's fall season. The reason that Journeyman and Chuck are showing up is that both shows are produced by companies other than NBC, and Apple is under contract to offer them.
Chuck is produced in part by Warner Bros. Television, and Fox Television produces Journeyman.
Heroes, on the other hand, is produced by Universal Media Studios, NBC Universal's television production unit. New episodes of that series are not available on iTunes.
Representatives from both companies did not respond to requests for comment.
The Unofficial Apple Weblog was first to report this story.