If you subscribe to Atlus USA’s newsletter, you should see a newsletter dated June 23rd, 1999 in your inbox. What happened in June of 1999? Well, June 24th (the 23rd in the U.S.) was when Persona 2: Innocent Sin was released on the PSOne in Japan.
We’re betting this is a hint at a Persona 2: Innocent Sin PSP localization. Here’s the newsletter in question: