Mmm...
Atlus packed this game to the brim with new content, but they interlaced it with the existing content so seamlessly that all of it feels like it was always there. To list and address it all would make this review prohibitively long, and it might spoil some surprises. We'll cover the highlights.
General exaggeration. There's more content than you'd expect from a port, but a lot less than, say, P3P. The major additions are the ski trip and new dungeon.
Also, the new dungeon breaks the flow and feels very out of place.
Once acquired, the scooters can be driven around town and beyond to explore.
Exaggeration. You can drive to Okina City (Which, whilst explorable, hasn't been expanded from its size in vanilla P4, so is like two screens wide), and a couple of other new locations like the beach, but 'around the town' makes it sound way more expansive than it is.
Plenty of other new story elements have been worked into the storyline to entertain return visitors to Inaba. Again, I won't spoil the experience, but new school events, trips, locales, holidays and more have been added to the existing content.
Tremendous exaggeration. There is one new trip and one new holiday, and they're the same event. There's also a couple of new locations, but they're simplistic and offer nothing new. Most events are incredibly short.
And my biggest problem with this review...
The overhauling continues in the presentation department, with visuals that make Persona 4 Golden look more like a current generation RPG than a PS2 port. It takes full advantage of the Vita's outstanding 16:9 OLED screen, with visuals and colors that really pop. Character art and models, and scenery have been updated
Lies. For the most part, the visuals are IDENTICAL. To say that it looks more current gen is bonkers. Textures have been sharpened in some places, the Personas have a fresnel effect now and there's a scene early on where the background has been remodelled, and that's it. Character art is higher res, but the same (And rightly so, Soejima is amazotron as it is), characters models are the same, scenery is the same etc. etc.