I Don't Believe in Imaginary Property
writes "Donald Knuth is planning to make an 'earthshaking announcement' on Wednesday, at TeX's 32nd Anniversary Celebration, on the final day of the TUG 2010 Conference. Unfortunately, nobody seems to know what it is. So far speculation ranges from proving P!=NP, to a new volume of The Art of Computer Programming, to his retirement. Maybe Duke Nukem Forever has been ported to MMIX?"
Let the speculation begin.