Thanks to Deano GTA-Master for this one:
|"The preview is called 'GTA: Vice City Stories - "Back in the city"'. And it's basically a radio interview with 'Mr. Rockstar' on VCPR on an episode of 'Pressing Issues', which you may remember from GTA: Vice City."
There doesn't appear to be any new details, but there's a full-page advert towards the end which advertises next month's issue and shows some never-before-seen VCS artwork, so it's safe to say we can expect a preview and some new info/screenshots then. That issue goes on sale Thursday 28th September, so be sure to pickup a copy.
Link: GTAForums Thread