A slightly different version of the teaser video has been posted (above), confirming more information is coming on 5th August; this could be on 4th August in the Western hemisphere, so we'll keep an eye out for details.
Nippon Ichi Software, and particularly its excellent localisation teams / subsidiaries like NIS America, is a favourite for some gamers that like games to be a bit different. The publisher / developer embraces that reputation with its marketing, as well, often putting out strange teasers to lure us in.
The latest is in the video above, a rather creepy and atmospheric security cam look at a girl mysteriously hanging out in a warehouse. Throw in a brief cut to a gory scene and the door is wide open for speculation on what this game will be about. Right now there's no name or information beyond the video tease, but the official website will apparently update regularly with fresh looks.
NIS has shown pretty good support for Switch over the years, so here's hoping that this will be another interesting title for the future. The teasers are certainly intriguing, anyway.