I'm not a dev, but from what it sounds like that won't be an option.
I am a somewhat competent programmer, and from what they mentioned, adding the hex based grid is a lot more complicated than just making the map hexes. They mention in the post that and I quote:
"This is a case where things are significantly simplified by working in squares instead of hexes; hexes have a lot more possible weird angles you have to deal with."
So I doubt they would add the extra work of doing hexes, due to aiming (as mentioned in the post), redoing all the terrain and making the multi-space assets work in hexes being all significant increases in the amount of work for little payoff.
But I might just be wrong.
Hope that answer was insightful :)