As Tango said, mission-wise the prologue is now very close to complete. I'm not sure what the progress on the comms has been.
We'll also need a period of testing after everything is done... apart from balancing the difficulty (I don't think there are any major issues with this in the prologue, though), we need to make sure that all the structures needed for the main campaign are in place and that our future additions will work without creating any glitches.