The wildly expanding Serafina boys are at it again. Following reports that they are taking over the space that housed Tom Valenti's West Branch on Broadway and 77th Street, and moving Serafina on 61st into their former Geisha space, Vittorio Assaf and Fabio Granato have confirmed they will also be opening an outpost in the meatpacking district. The duo has just signed a lease on a space at the corner of Ninth Avenue and Little West 12th Street, directly across the street from Pastis. The new restaurant, slated for a late fall opening, is tentatively titled Serafina Non-Stop, because they hope to keep it open 24 hours a day, seven days a week. "We've missed being in lower Manhattan since we closed our Lafayette location a few years ago,'' says Granato, "We can't wait to bring our Serafina energy back downtown.''