No summary on TLC, MSN, or my cable guide yet.
I believe Jordyn is getting her tonsils out. My guess is that the "secret" is that Josh and Anna are expecting another boy.
TLC synopis update:
Jim Bob and Josh are hurting as trainer Steve puts them through their toughest workout yet. Meanwhile, Jordyn gets her tonsils removed, and Josh and Anna go in for an ultrasound that will reveal the baby gender, but only one person will know the results.