Maybe it means they're porting this FPS that's being developed and takes place in Sweden. I forgot its name, but it's an FPS in an alternative 1980s with mechs walking around.
But we all know of course that the "Borealis" is the ill-fated research vessel from Aperture Science. The same stock photo of the birds is also on the cover of a book called "Anatomy of Failure".
Half-Life 3 confirmed.