as far as i know there have been no planes to have a dynamic campaign.
keep in mind that real simulators don't have a dynamic campaign they use a mission editor that can add situations and units etc as the simulation is running i think that would be cool as the server admin could add units from the f10 screen etc to a current online game. Dynamic campaigns are over rated in my view a good mission builder tool is far better for a simulation.
any way i think there working on the new patch, AI improvements / ground detail and down the track - possible new a10 module at current.