A little late on this, but no- that type of work always happens prior to the land opening, not prior to construction starting.
DAK, just recently, was our biggest example of this. Walkways widening, Flame Tree expansion, tiffins opening, etc- all happened after Pandora was well underway.
No Reason to widen paths- which takes a few months- when a several year project hasn’t even started yet. This is almost assuredly a viewing/seating area for the new lagoon show.