Any theories on what Knuth will announce?
It is rare enough to be called 'Earthshaking' but the probability is really thin.
Probably a big TeX thing, given the context.
I forget who it was that said it first, but one of my profs relayed it as serious advice: that every computer scientist should dable in P=NP in his early years, then go off and do something useful for a few decades, and come back to it to dable again.