[Legendary][1] is listed on the game's site footer. Since it's the production company behind Denis Villeneuve's Dune adaptation, it's at least blessed if not co-produced, albeit not seemingly with any canonical story relationships or obvious
This doesn't necessarily mean it's a tie-in. Just that who-ever current owns the adaptation rights wants bang for their buck. Typically that does mean a tie-in, but I think the Dune universe doesn't really need it to sell it, any more than Lego Batman need be canon.