Just put this in an FAQ on the kickstarter because enough people were asking about it.
For the demo, I've been working on a shoestring budget with asset packs from itch.io and Pita's excellent overworld tileset was the best match in scale and content for Blobertson's mech asset pack and Viridian. I also wanted to get an MVP out asap without paying the technical Hex Tax.
So: hexes are a possibility that we're going to discuss once we know what kind of budget we'll be working with, but no promises. Lancer was originally designed to be played on a square grid, anyway; you can see artifacts left from that history in systems like the Black Witch's perimeter command plate.
so tldr maybe, but it's an expendable feature and we're biting off a lot to chew already