T.Thompson in "The Mythic Past" page 202, describes how, as a junior member of an archaeological team in 1967, the team "found" a "Solomonic gate" .."before we broke ground"...but..."This fabrication began to come apart when.....".
It is too early to tell and it may be just the weird workings of media presentation but ascribing a building to David is just a bit too coincidental for my taste.
But, if verified, then it is important because it is considered probable by some that Jerusalem in the 10c bce was either uninhabited or a very minor place. And this find would contradict such a view it seems.
So it is a development to follow carefully.