As told to us by RagnarRox, Valve has set a press release aside for GDC at 3pm on the 3rd of march. Let me run that by you again - 3pm on 3/3.
What's even funnier? With GDC being held in San Francisco, San means three in Japanese - further adding to the madness of 3's. There has been numerous funny attempts to prove HL3's existence by the gaming public, becoming a meme-like process as seen with the popular Illuminati proof videos and articles you often see.
However this time the 3's have lined up in ridiculous fashion - could it be that Half-Life 3 is on the way?