TLC has released 3 video clips for Season 5 that viewers haven't seen yet or slightly longer versions of scenes from the first two weeks of season five.
The first one is called "Where Jacob fits in". Amy and Jacob play around with boxing gloves in the kitchen, while Amy speaks to the camera about Jake's place now that Jeremy and Zach are getting older.
The next one is a slightly longer version of what viewers saw last Monday when the Roloffs visited Corban. In this one, Amy is left out when they visit the guy's dorm.
The third clip is the scene about Molly's castle from the season 5 premiere, except that this clip includes a bit with Jeremy and his friend Brendon, helping Matt clear some branches around the castle.