Notice how the new concept art matches the old teaser pic on the left. So I imagine the one on the right is still in play.
Okay, Im can be hallucinating here, but since they still calls this new castle Akumajou and there is a japanese shrine thing, what if this is indeed THE Akumajou? Maybe it happens years later in the same universe and this is indeed Dracula's Castle, but without Dracula. Think about it people, IGA didn't waited for a eclipse, but waited for a full moon before announcing this game.
Also Gebel isn't going to create a castle, he will summon one, right? Before someone come and says "so if its in the future, where are the lazer gunz and shit lulz?" remember that Getsu Fuuma happens even more in the future and he wears a samurai armor and a katana.
About the KS, I've wrote down how much they pledged in almost 27 hours (I wanted to count 24 hours but I forgot and remembered only now to check). 1322 pledged 97k in total. If we agree that people are pledging more or less 90k in 24 hours and interest is decreasing, if things continues as now with a peak of interest at the end, I think that this KS will end with 4,2kk more or less.