Trains from Lockerbie are to arrive in Edinburgh and Glasgow before 9am for the first time next year.
The breakthrough came in a raft of improved services for the station announced by rail bosses on Friday.
It means rail users will have double the number of First TransPennine Express services each weekday, more weekend services and early morning services to the Central Belt.
MP David Mundell, who has long campaigned for the extra services, said it was a “victory for commonsense”.
First TransPennine boss Nick Donovan got the train to Lockerbie himself to make the announcement.
He revealed that daily services calling at Lockerbie will double from 13 to 26 in May 2014. Services on Saturdays will jump from 14 to 22 and there will be a huge leap in Sunday services, from four to 15.
But the biggest boost is that for the first time trains from Lockerbie will arrive in Edinburgh and Glasgow before 9am.
Mr Donovan said First TransPennine are investing £60 million in new electric trains which will run from Manchester to Scotland from December this year, stopping at Lockerbie.
Mr Donovan said: “There is clearly a desire for these services and we are really pleased that there has been a 70 per cent increase in people using ourtrains since 2006.”
Mr Mundell said: “It’s a big step towards a balanced timetable.”
The MP still intends to campaign for a late-night service into Lockerbie from the central belt and has so far collected 300 signatures on a petition being prepared to hand to Scottish Transport Minister Keith Brown.