I find it interesting that with the recent Antarctic patch, the version on the launch window says 1.2.1. Why change now and to that? They didn't change it when GS came out. I believe they changed it from 1.1.x to 1.2.0 when Rise & Fall came out. Why not a 1.3.0 when GS came out? It should be 1.3.1 with this patch. It is really not a big deal, of course, but just wondering.
My wild-ass guess would be that those updates only relate to changes to the launcher app itself, not to Civ.