Several stories have emerged recently about tombs in Egypt being re-evaluated based on heat scans that seem to suggest some of the tombs have hidden passages or chambers that have yet to be discovered. The first of the stories comes from sciencealert.com. It suggests "Thermal scans have revealed a strange ‘anomaly’ in the Great Pyramid of Giza" here.
Also, on abcnews.go.com, they shared "Egypt Detects 'Impressive' Anomaly in Giza Pyramids" here.
Finally, on blastr.com, they proffer "Archeologists might have just found a secret room hidden in King Tut’s tomb" here.