While it doesn’t turn the seamless multiplayer back on (Ubisoft says “more info will be available on that soon”), Watch Dogs 2 update 1.04 arriving later today on PlayStation 4 and Xbox One will change the explicit NPC model that got one PS4 user suspended, fix a frame-rate issue during the Limp Nudle mission, and hopefully improve performance on PS4 Pro.
Here’s the full list of patch notes:
PS4 & Xbox One
Bug/Glitch

Emote Wheel Swap – Bug where emotes and weapon wheel become intermixed is now fixed
Explicit NPC Model – We’ve updated one NPC model that was previously explicit. Nudity on other male and female NPCs has not been changed Phone App Disappears – Some players encountered a bug causing their phone apps to disappear. The fix will recover the missing apps

Performance

Nudle – Framerate during the ?Limp Nudle? mission has been improved

PS4
Performance

PS4 Pro performance should be improved with this patch

Ubisoft says the seamless multiplayer is still their focus.
[Source: Watch Dogs Game]

...