Inaugurated by Orion in 2011, Gateway originally republished significant works of science fiction. By 2015, it had a catalogue of nearly three thousand titles, by over two hundred authors. Latterly, it has extended its catalogue to classic works of fantasy, horror, and crime, as well as science fiction.
It is a companion series to SF Masterworks.
Only works on the list by Australian authors are included on AustLit.
Sources include https://www.thebookseller.com/news/more-hachette-authors-join-gateway.