Post Office budges on South Station

Why it matters: DeJoy's meetings with Lt. Gov. Kim Driscoll and Amtrak officials, first reported by the Globe's Jon Chesto, are the biggest indicator yet that the Post Office wants to make a deal.

The latest: U.S. Rep. Stephen Lynch made the meetings happen and he says he's more optimistic than ever that South Station could expand onto the USPS land.

Catch up quick: Amtrak and the state have had plans for years to expand beyond the 13 tracks at South Station to make room for more trains headed south and west.

• But the hulking USPS facility next door occupies the critical land between the station and Fort Point Channel.