A summary for those not familiar with it:
• Operating systems on devices whose primary user is a child must provide a way for the parent to provide age bracket information about the child.
• They must also provide an API that apps and app stores can use to find out that age range if they need to have limits on what children can do with them.
• They amended it to not apply to most open source operating systems.
Note that there is no actual age verification. It just uses what the parents put in. It is really just requiring each OS to have a standardized parental control system.