Google is notorious for having commitment issues about its software, and for whatever reason they're loathed to take it out of beta. However the Google Blog has just announced that a much improved Google Desktop Search has finally left beta and the clutches of the Google Labs.
There are a lot of improvements, but the one which might initially be overlooked is porbably the most important. Google is offering an API for developers, and John Battelle has a good post in his blog which talks about some of the implications of exposing an API for Desktop Search to Windows developers.
Slashdot also carried the story, but the gathered hordes didn't seem to "get it" and the only discussion seemed to be lots of mumbling about privacy issues.
Of course I'm waiting for Apple Spotlight, but if rumours are to believed it shouldn't be long now...