This story was broken by Owen Jarus at Live Science: Ancient Inscription Points to Lost Temple of Unknown God in Yemen. But Professor Moss suggested the connection with the Queen of Sheba. That depends in part on whether the Queen came from Yemen or Ethiopia. Both are possible.
One complication is that the tablet was sold by auction and there is some concern that it may have been looted. So far no one has mentioned an additional concern: if it is unprovenanced, it could be a forgery. Perhaps specialists have good reason to believe it is a real ancient artifact. That question is outside my expertise, but I would like to see an expert address it.
For many past posts on the Queen of Sheba which explore both geographical possibilities, start here and follow the links.
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