I am not sure if T2 has been signed off yet, often that actually doesn't happen for a while after the particular development is in use. Largely, to allow for snagging to be completed.
As for the roads situation in the surrounds, don't forget the plans have changed slightly as there was to be a large hotel almost directly "landside" of the terminal. This obviously wasn't built which might have required a redraw on the surrounding infrastructre.