There was some debate whether or not Mileva collaborated with Einstein on some of his most important work.  Is it a hint?  I don't know but my personal take on Dec. 19th is that they will announce a collaboration with some other organization.  NASA, SpaceX, some other scientific or corporate organization?  Who knows it's all speculation right now but if it isn't as mind blowing as it's been made out to be then EMC will certainly see a huge correction.  Regardless I still believe in the project long term...