There are so many variables, that if, for example, the delay with the PFCU motors, that it is nigh on impossible to pin down an EXACT flight date. There are so many things to go wrong and they are at the mercy of so many suppliers/OEM's that no one can say for sure when she'll fly.
As Flip Flop Man said, go to the website forums, ask the question, and an engineer will give you the answer. Quite simple really...
