It looks like we'll be getting a "rebuild the Rammas Echor" quest-line near Harlond - or simply the appearances. They are definitely developing that spot to have more reconstruction going on with a camp of masons, from the looks of things.
But it would appear that Scenario et al. learned their lesson with CardoSwan, the "best kept secret of last year" - hahahaha
We can't really see anything other than the Harlond area because, well . . . there are zero changes in South Ithilien, and we could only have viewed a distant Lossarnach from the upper hills of an "after-battle South Ithilien." The invisible walls are stronger than Shelob's webs and the Watchers of Cirith Ungol!
I did notice, just swimming along the invisible wall in the Anduin itself, that some parts of Harlond also look more reconstructed and/or under reconstruction / less ruined. But that's all I can see; the rest of Lossarnach visible from the river waters looks like a copy / paste of "before battle" Lossarnach with blue skies.
We can only "narrow" things down, pun intended :P No noticeable changes north or east or southeast of the Pelennor. This means "After Battle Gondor" must be "western East Gondor" and "Central Gondor" - pretty much anything from Harlond southward but no Ithilien.
They might save "after battle South Ithilien" for heading southward in Umbar's direction, perhaps . . . it just looks like we're getting re-worked, after-battle versions of the Gondor zones we already have "before battle."
Cheers!