6 fans. Yes, full tower according to the manufacturer. E-ATX motherboards up to 285mm wide fit inside.

Unfortunately, we are waiting for news. None of the suppliers currently have a delivery date for the next time a delivery is expected.

If you mean can they be removed then yes, I have mine completely out as I don't use any. They also have dampers as far as I can see (rubber). Otherwise you can see them quite well in the picture from the rear, both the one at the bottom and the two on the side.

It is the black version and as other said, yes there are 6 fans, 4x140 + 2x120 reverse. They are pre-installed and wired to the included fan hub except the back one that isn't already wired.