Big Tree Hospitality — the group behind Eventide Oyster Co., one of the most beloved restaurants in Portland, Maine — has confirmed it will indeed open a location in Boston (1321 Boylston St. at Yawkey Way) sometime in 2017, says a restaurant rep. Eventide Fenway will offer a “concise and creative seafood menu in a casual counter-service setting,” according to a release. Big Tree also runs the ever-crowded Hugo’s (New American) and The Honey Paw (funky noodles) in Portland.