Same problem here!
For some reason the PS4 client wanted me to download a 26147.70 MB patch named ffxiv-H2017.06.06.0000.0001
I previously logged out and turn off PS4 just to find this situation few hours later.
Already happened this same week's Wednesday with same specifics.
Doing some research I found out that this very exact problem had already happened at Stormblood expansion's release causing trouble and annoyance to many people . Please work on a solution to fix it thx.