Well, Emmett Shear lied to everyone if he knew about this. I understand why, he was probably thinking that without any ability to actually undo it the best that could be done would be to make sure that no one else knows about it so that it doesn't start an arms race, but we all know now. Given the Board's silence and inadequate explanations, they may have had the same reasoning. Mira evidently didn't have the same compunctions.

This article, predictably, tells us almost nothing about the actual capabilities involved. "Grade school math" if it's provably or scalably reasoning in a way that is non-trivially integrated with semantic understanding is more impressive than "prove Fermat's last theorem" if the answer is just memorised. We'll probably know how important Q* actually is within a year or two.