Apparantly, the 28 year anniversary isn't as exciting as the 28 week one. Though it would sure be coincidental if it was. Not as coincidental as the dated massacres plaguing camp Crystal Lake, or the fact that those lying tramps and that dude with the mole happened to be in front of the protaganist's car at the end of Hostel, but still rather unlikely. Of course, they could always go the 29 Weeks Later route as well I suppose, and then I'd have to shut my smarmy yap. That'd teach me.