Apparently the Gov. wasn't kidding. Commuter rail has published the pending weekend service on the Fairmount (Purple/Indigo) Line for the first time ever.
Hyde Park to South Station locals have fought for this for years. I'll be on the first Saturday morning, Nov. 29th train and head to the Haymarket.
Basically, it's hourly service and in some ways better than the existing five-day sked. The last train from South Station will leave at 10:58PM.