I believe that technically they may not need planning permission for a new small terminal.
I'm not sure about that, i've seen references to planning permission applications for new hangars, so I'd have thought a new terminal would need permission too.
However, the previous plans submitted last time showed a new terminal located alongside the freight distribution warehouse - this is no longer shown on the new plans, and instead the land has been reallocated as car parking, with additional stands added. (previous plans had 4 stands, now 11).
So the terminal will now remain where it is, not sure if they plan to redevelop it or not though.