HP

If you were concerned, as JKR appears to have been, that HP fandom would wither and die without fresh canon to whip itself into a frenzy over, fear not! JKR has provided fodder for at least six months of crazy by confirming (or announcing, depending on your POV) that Dumbledore was gay and in love (involved?) with Grindlewald. It seems to be true, in the sense that TLC are reporting it, it's not 1st April, and it's now being carried on a load of international news websites. So there you go.

You've got to admire her - she certainly knows how to generate publicity.