The plans I have seen for 2009 looks as thought it will reduce the amount of departures compared to now.
The 2009 timeframe is wildly optimistic and frankly, unrealistic given the new PM and his alleged 'bright-green' credentials. The Blair government's Airports Policy was in conflict with its Environmental Policy and since Brown
et al wish to be seen as being greener than the Greens, the hoops and hurdles that will be required for the necessary airspace consultation, and the caveats and conditions that are likely to be imposed will make 2010 look like an optimistic target date. Especially if Brown calls a snap election next year and his lot are returned with a working majority. Don't hold your breath...