Nikon on Tuesday slipped out a teaser page giving a strong clue as to its mirrorless interchangeable lens cameras. While just saying "I am coming," the page has a countdown that ends on Wednesday, coinciding neatly with the rumored launch date. The camera maker rarely ever builds up the public for a launch, either for its regular compacts or its DSLRs, supporting the notion that it's a genuinely new platform and not just a sequel.