Ken Rosenberg in Vice City Stories?

Jordan over at PlanetGTA has made an interesting discovery which suggests that Ken Rosenberg will feature in GTA: Vice City Stories:

Ken’s Office in Washington Beach

This is the sign which appears outside Ken’s office in Washington Beach. Notice that it says “since: 1984”, which means that Ken has been practicing law in Vice City since 1984 – the year when Vice City Stories takes place.