Virgin Atlantic to increase London flights from 1 daily to 2 daily with A339/A35X.
https://www.businesstraveller.com/business-travel/2023/12/14/virgin-atlantic-to-increase-flights-from-heathrow-to-boston-and-jfk/
According to this article from boston.com, it seems like the project is moving forward however it states that the environmental review should be finished by early 2025 which means the project is about 2 years behind schedule...
Seems like they will be closing the Union branch from September 18- Oct 12 for the squire bridge work which lines up with the Government Center Garage Closure which means that the headways will be between 10-16 minutes on the Medford Branch.
https://www.mass.gov/doc/allston-multimodal-task-force-meeting-august-10-2023-meeting-presentation/download
These slides have been posted on the MassDOT site. Seems like the Cambridge Street Bridge will be getting replaced starting next year.