Broadband users in Edinburgh and Glasgow could soon have access to broadband speeds of up to 40Mb.
As many as 34,000 customers are set to benefit from the improvements, which are due to be completed by 2010.
Raising the capability of the area's broadband connections to the 40Mb mark will mark a five-fold speed increase from the current maximum broadband speed of 8Mb offered by BT.
Heralding the development, Scotland's first minister Alex Salmond said: "I welcome the news that Edinburgh and Glasgow will be among the first locations in the UK to have access to BT's new super-fast broadband.
"This technology has quickly established itself as vital communications tool for businesses and people of all ages."
The announcement follows the Scottish government's launching of a £3.3 million project designed to increase access to affordable broadband in the country.