The transformation of Jackson Square would continue with development of the last major piece of the puzzle bringing some MIT-style architecture to this side of the Charles. "Great work is happening in the past year," said Richard Thal, executive director of the Jamaica Plain Neighborhood Development Corporation, Tuesday night at a public meeting to describe the final plan for Jackson Square Phase III. This is two buildings set around a courtyard at Amory and Centre streets. They will be developed by JPNDC and The Community Builders. "Eleven years ago the BRA [Boston Redevelopment Authority] designated us to put together a viable plan for new a neighborhood that had been torn apart [by I-95]," Thal said. The scattered site totals 11 acres.