hmm some answers to your questions :

@3:we are making he whole orca series:

Orca Fighter
Orca Bomber
and the CarryAll

the Orca Bomber is in work at the moment

@4 : i think so(also some new buildings)

@1 : we will make the light infantry like the ones in the movies....

to the campaigns :

we make a new story (after or befor TS) ...
first we will make a Nod Campaign , and maybe sometimes later we will release a GDI Campaign too