TfL has published a finalised version of the Londinium Overground map, which makes significant changes compared to the original proposal. The Mildmay line is cut back from Harrow & Wealdstone to Baker Street because of space constraints, and the Weaver and Windrush lines are cut back from Regent Street to Baker Street and Charing Cross respectively. The Mildmay was thus also extended from Regent Street to Baker Street. These changes reflect the logistical reality of the network, and were made in real time as the network was being constructed.
As of today, the tracks themselves are complete for the Mildmay and Weaver lines, with the Windrush line being almost completed. Once the station buildings themselves are completed, which will most likely feature a unified architecture and design language, the network will open, though TfL are still hesitant to provide a due date.
