Honestly, if it doesn't seem to be affecting him to much (e.g. he's not crying, angry or constantly talking about it), I wouldn't say anything just yet. Who knows what the actual conversation was that his parents had with him and the parents are probably waiting for what they believe is the right time to inform you. Certainly, if it means that he will no longer be in care, the sooner you know the better. But perhaps his mom is wanting to wait until she finds a new home to provide notice since until that happens, she may not know what their daycare needs will be. Such a sad situation. I know of many families who are able to separate amicably. Hopefully this is the case for this family (assuming that it's true).