I also found out a few other things that have changed:

• They now use Torx T5 screws
• The backcover and battery are now fixed with these screws
• The battery uses a dedicated connector
• Parts of the backcover now require a pick
• SIM/SD now sit at the bottom in a dedicated slot and don’t require the removal of the backcover.
• The volume buttons got replaced by the “moments” button and are now on the left

IMHO this is kind of a downgrade in repairability as you now need custom tools (not everyone has a T5 screwdriver at home). Moving the volume buttons to the other side is also kind of weird and unexpected as most (non Apple) phones have them on the right…