A poorly substantiated assertion regarding the future status or make of an item which is cited by a dubious party for later use as a reference of gross inaccuracy and to exercise gloating. Most often employed in the context of technological advancement.
Here's some Claim Chowder for you; my buddy swears that there's GOTTA be an e-ink version of the iPad soon since people love their Kindles so much.
Not gonna happen. The iPad is too good at playing back video.