The maintenance is complete, and the PTS is now back online and patch 12.1.0 is available.
Maintenance for the week of August 3:
• [COMPLETE] ESO Store and Account System for maintenance – August 4, 5:00AM EDT (9:00 UTC) - 4:00PM EDT (20:00 UTC)
Spot The Difference! Construction in Tamriel Thread!
I'm trying to find the differences in areas on the PTS vs. Live.
I took screens of the maps, but there's no difference that I can tell.

I guess they haven't updated the map yet, I don't see a difference. Does anyone else have in-game screens of what construction is going on? Or where it is?