Lubos Motl has a posting announcing that Terence Tao will be one of the 2006 Fields Medalists. The announcement of the Fields medals is officially made at the time of the International Congress of Mathematicians, which this year will be in Madrid in August. A few months before the Congress generally there are solid rumors circulating in the math community about who the winners will be. If Lubos is right (and while I don’t know his source, this agrees with earlier speculation), the blogosphere will be responsible for a much earlier spread of rumors about this than usual.
Update: Lubos’s posting just disappeared. So, maybe this rumor is not right, or maybe it is, but whoever he got it from didn’t want it spread so publicly. His posting has been replaced with the comment “I removed information about a certain medal that was far too preliminary.”