Is Trader Joe's opening a store in Redmond Oregon?

No, I don't see one. On their corporate website, they list locations in ten cities in Oregon, including stores in Beaverton, Bend, Portland (3 locations), Eugene, Medford, Salem, Corvallis, and Clackamas. Perhaps they planned to open one but it didn't happen. I would advise checking their company website for news of any future locations.