Ok LCY-GLA didn't make money before but they must think there is a future in it found this on gla BAA website:
Featured destinations
London City
Fly to the heart of the City with new airline BA CityFlyer, part of British Airways. From the end of March, BA CityFlyer will offer up to four flights a day to London City Airport, linking Glasgow's growing financial services sector and the heart of Europe's most important financial centre. London City enjoys rapid transit links to Canary Wharf and the centre of London, making it the ideal choice for business and leisure travellers.
Have looked on BA and BACON intranets no word on it. So just wait and see.