A:AnswerHello. As this carrying case appears to be identical to the previous cases Nintendo has made for the Nintendo Switch, I can say that there is a flap that allows you to set your Switch against it, like a kickstand, and on top of the flap is a mesh pocket and a few game card slots. I have yet to see any official images of the inside, but if this case is the same as the other one they made that looked exactly the same, it should have some game card slots.
A:AnswerHello. The Switch OLED is 9.5 inches instead of 9.4 inches for the regular switch. So things that fit very tightly, such as grips cases or protective cases will most likely not fit. However most carrying cases should still work, as long as the carrying case is not a very tight fit.