The Nightmare Scenario: What if the new OM telephoto zoom is just a rebadged Sigma 70-200mm f/2.8?

OM Digital is set to announce a new telephoto zoom lens soon—but there’s one possibility that gives me real nightmares. What if, once again, it’s just a rebranded Sigma full-frame design? There’s an unconfirmed rumor suggesting the upcoming OM lens might actually be a white-painted, OM-branded version of the Sigma 70-200mm f/2.8 full-frame lens—similar to…...