So, n-gacha becomes "free gacha", where you get one free roll per day, and one f-gacha(?) costs 1 gold and 1500 coins.
all the gachas has been bolstered with new cards and bigger pools.
old e-gacha becomes available after the event in regular gacha.
R-gacha are, well... rarer... in the f-gacha.

Nutaku are trying to sell out their old cards it seems, and make it cost more to acquire the n-slayer, but right now it feels like christmas. I have already gone through 100+ f-gachas and acquired 30+ new girls. Too bad I fed all the r-gachas I had to the squirrel..

Does this means that the e-gacha box is reset?