Is a Little Nightmares expansion on the way?

Little Nightmares was released last month to critical acclaim (you can read our review here), and while the game is short, developer Tarsier Studios has been open on possibly expanding the story with post-launch content.

Via a new accolades trailer celebrating the game's launch, we may have received our first look at this new content as, towards the end of the trailer, we see main character Six peer through a screen at another, similarly proportioned child in what appears to be gameplay footage. It's very brief, but take a look yourself below. Are you convinced this could be an expansion?