New developments are changing the local landscape. New England Studios broke ground on the Devens property for a $30-million TV and film production complex that it envisions as a magnet for projects being made in Massachusetts. “The Street,” formerly known as the Chestnut Hill Shopping Center, is welcoming several new tenants, including an upscale movie theater, as part of a $50 million revamp. And the old Polaroid property (above) in Waltham is being blasted — much to the consternation of neighbors feeling the earth move — to make way for a major retail and office complex.