I just settled on expecting a similar timeline to Tsubaki's preview. That way I get a nice surprise if it comes earlier, and if it doesn't I was ready for it anyway - regardless of which way = I'm happy.
at least they havent released the preview to release the full version a month later!
i guess next week it is...in 2 weeks it will be too soon to the release date(?) they might be trying new things since oricon counts streaming though