My guess is that the engineers have been busy with 3.01, 3.02, 3.03 and 3.04.
Fortunately, 3.04 is pretty solid. Sure, it's not perfect, but I would hope that the engineers can steal away a few hours here and there to get GP-VST finished. If the cost for Orchestra users is reasonable, I'll definitely pick it up. It will be much more convenient than what we have now for working in audio-mode.