They’re at least being professional about it, they’ve gone through all channels and simply don’t want to disappoint anyone. The difference between this and something like tamriel rebuilt or whatever it’s called is that this one is done, it’s ready to go and they even say it’s ready, but they don’t want it to break after the next gen update. It’ll come out, just have patience.
If anyone is looking for new fallout content there’s always the fallout new California mod for New Vegas.