I've always had a love/hate relationship with april fools. The entire point is to make people truly believe something has taken place, which I find incredibly fun - yet it's become such a commonly attempted thing that very few people do it right. They just take a sledgehammer to an operation that requires the subtle cut of a surgical blade. For example, everyone has grown wary to the ordinary "big announcement" coming out on april 1st. Oh look! Google has smellovision now. And don't forget that BZP owns Lego. Simple stuff, and easily seen through.
But let me ask this. Is not the best prank one which fools you? And wouldn't making a real announcement on this ludicrous date fill that exact quota? It's the sort of thing I would do, were I in charge of certain site pranks. You'd be utterly convinced it was not real.
Egg. Alllll over your face.