It will start scheduled services this coming Sunday. I know there are concerns about the amount of money it cost, but in my view it's (partially) righting a 46-year old injustice.
British Rail used the closure of the Waverley Route - almost 100 miles of track - to show they meant business - if they could close the Carlisle to Edinburgh line, they could be equally ruthless elsewhere. They just made up how much it was losing each year based on figures from other routes. The Borders subsequently paid a high economic and social cost.