Adam Castiglioni tweets this storefront photo of the soon-to-open Bread + Butter. As mentioned previously, this will be pastry chef Lee Napoli's (formerly of Umbria, Grill 23, and others) first bakery of her own. Business partner Brian Lesser has suggested this could be the first in a planned chain. Bread + Butter is opening in the former Cafe Graffiti space.
Correction: As commenters note below, Napoli's Chocolee in the South End offers a limited baked goods selection. This will be her first full-hours, full-service bakery.