They're interested looking into possibility of console port once game is finished the game on PC. Do bear in mind the team is still small (8 people, 7 of them developers), and inexperienced (their first ever commercial game, no experience with consoles). Raft currently lacks controller support that is crucial for console port and either needs lot of optimization or needs to be restructured in a way that consoles can handle it. Also even with most generous guesstimate, Raft will take at least another year and half to complete (this assumes game story line is no longer than 3-4 chapters, no other major content additions are needed (unlikely) and there is no major system overhauls are needed along the way (not a change)).
So you'll just have to wait and see how things go. Lot can change in couple years.