This is the weird version that'll not have the portable content at all, right? That's such a shame, this could have easily been the definitive version if they made a Persona 3 Portable Reload.
Persona 3 portable was the portable re-release. However they released it with a lot of extra content. Content that people believe completed the package and made the game even better. As a result, many fans will experience a jarring feeling as the content they like will be very obviously gone. Hard to understand their decision. Maybe they planned to make it DLC. Sneaky buggers.
It was entire alternate playthrough with a female main character, new characters to build social links with, and a lot of new insights into the other characters of the game. The characters you fight with have different relationships with the female MC than the male MC. The PSP version had both playthroughs on one disc, though they had to make some adjustments like turning it into more of a visual novel style than 3d environments for the "town" segments of the game.