This article is on Dr. Zahi Hawass's continued examination of all the royal mummies with his new DNA lab. Though I imagine getting DNA from these deteriorated mummies will be difficult.
Though the two fetuses were found in kingTutankhamun's tomb that does not necessarily mean they are his. Like much of the boy king's funerary equipment, the fetuses may actually belong to Tut's predecessor king Smenkare.
However, if they do belong to king Tut and his queen and they yield mitochondrial DNA than perhaps they may point to one of the unknown female mummies as queen Ankhesenamun.