Just checked my order and it's now changed from Aug 23 to Sept 4 ughhh. I had already committed to this Note even with being underwhelmed but Samsung is not leaving a good impression.
They did that because holding down the power button will open Bixby by default instead of giving you power options. You can remapped to the power settings though.
There are a lot of crappy Chinese cases that are popping up as the first results on Amazon right now. Some even have reviews which look obviously fake. You should probably stick to some of the good brands like Spigen , UAG, etc.