You will receive updated pictures every 18 months - 24 months plus everytime you send a gift of $60 or more, with the thank you. Some people receive surprise pictures outside of this time but these are the promised pictures.
As Sarah said, you will get a new photo roughly every two years. I see your sweet kiddo last had their photo updated in August 2018, so you can expect a new photo sometime around August 2020. Additionally, when you send a gift of more than $60, the family will send a thank you letter along with a photo. There is no guarantee that the child will be in the photo, but we do ensure that either the child and/or a family member is in the photo. :)