Yeah, Civ V uses hexes instead of squares, and Beyond Earth is following its lead. No full spherical in Civ V, so I wouldn't count on it in this game. It's obviously debatable which is better, but there are some nice benefits to hexagons. The borders between terrain types looks more natural (or less unnatural) without it being hard to tell the terrain of a tile. The distance from one tile to any adjacent tile is equal, as opposed to diagonals being a great distance, since there are no diagonals (which avoids some weirdness). IMO, it's not a huge deal. A bigger deal is that it's 1upt (1 unit per tile), which means you can't stack up units for the most part. That has more significant implications, which are harder to summarize, and how it works in Beyond Earth could be different than in Civ V anyway.