MacRumors.com

Gizmodo claims that the iPhone will be announced on Monday.

Gizmodo Knows: iPhone Will Be Announced On Monday
I guarantee it. It isn't what I expected at all. And I've already said too much. –Brian Lam

No further information is provided, but there is a clear implication that the iPhone is coming this Monday (December 18th).

Brian Lam is a an editor for Gizmodo and former assistant editor for Wired magazine. While such a short unqualified blurb would not usually get much credence, Gizmodo is a relatively well established gadget blog.

Despite this apparent confidence in this report, Gizmodo has no prior record of accurate Apple rumors. Also working against Gizmodo is a previous teaser post also made by Brian Lam that implied that they had a scoop on an upcoming Apple product. This prompted speculation and subsequent disappointment when the announcement was revealed to be about Tivo 3.0 and not an Apple product.