This is bound to rise some crack-pot-theories for sure but I'd really like to know what they mean by saying they'll revamp the MAP?!

The eternal optimist in me says that yes they'll FINALLY put some FANTASY in this game filled with boring realistic plains that don't look like a FF game at all.

BUT and this is a big but; maybe it's just A) tweaks to the actual map-screen and it's UI OR collision tweaks to environments.

I'm trying hard not to assume anything until they state this in some clear way and show pictures of what they're doing.
Until them I'm thinking this might mean that they're probably saving memory by using the same assets but scaling the copy pasted elements by code so that they'd look less alike.

I didn't see the Kanji for (paper) map in that answer anywhere so at least that gives me hope =)