The news is spreading that an inscription on a vessel was discovered in the City of David
excavations. Archaeologist Eilat Mazar announced the discovery this week and has suggested, along with others, that the letters are a Canaanite script. At this point there are no other known examples of this type of script.
It will be interesting to see how this all plays out. At this point there is no reason to doubt the inscription's authenticity. It will be the interpretation of that inscription and what it may mean for understanding the history of Jerusalem that will prove to be interesting. Mazar, using her grandfather's work on King David, suggests that David's scribes were Canaanite which could explain why the inscription is possibly in a Canaanite language rather than Hebrew.
Below is a video of Eilat Mazar discussing the find and below that is the official press release from Hebrew University.