Two short clips of in-game footage have been added to the official Rockstar GTA 6 website in the past two weeks, both formatted as scrollable elements on the page rather than standard video players. You cannot pause them or go fullscreen. The first appeared around the cover art reveal on June 20 and the second went live alongside the pre-order opening on June 25. Both run at 4K resolution and 30 frames per second.
The nighttime clip is the more technically detailed of the two. A slow pan crosses a Vice City bay after dark, and at full resolution a lot is visible: helicopters and planes in the sky, boats moving across the water, a Ferris wheel on the far shore, and lines of headlights along distant roads. Building interiors are individually lit, with windows and floors showing light from inside. Multiple technical analysts looking at the footage have described the lighting model as consistent with ray-traced global illumination. Rockstar has not confirmed what rendering approach the final game uses.
Jason and Lucia appear together in the second clip, on a Vice City beach in daylight, wearing outfits that match the bonus apparel bundled with the Ultimate Edition. That one says less about technical rendering and more about how different the protagonists can look from their defaults during ordinary play. Rockstar has not drawn attention to either clip with a formal announcement. Both are simply on the site, available to anyone who goes looking.