Costumes will be out probably not this Tuesday but Tuesday the 28th in Japan and on PSN. Xbox will likely get them a few hours early again if you live far enough west of Japan, up to Monday evening. I believe the other DLC packs released on the 4th Tuesday of the previous months, though this does mean that this pack will release on the latest possible date.
As for the Kasumi and Marie Rose DoA Festival costumes, they look like generic low-effort booth babe costumes. I'll still get them and hopefully we don't have to wait until December or whenever we had to wait for the Red Bull B costume. It's also nice that it's two costumes instead of one.