Up front, the headlights are slimmer than those on the current Q7, and the inside corners have been pulled farther inward. The grille appears to sit a little lower in the fascia, and the top has been reshaped to match the new headlights. Those also feature bold LED shapes that are a signature of current Audis.
The taillights get a similar treatment to the headlights with bright geometric LED designs, while the tailgate itself has been (comparatively) drastically reshaped, with the area below the taillights pushed in to match the depth of the license plate alcove. The rear bumper doesn't have any provisions for exhaust tips, which seem to now be hidden below (we doubt this is some sort of electrified Q7).
Besides the exterior, it's possible the Q7 could be updated with Audi's latest dual-touchscreen MMI system found in the Q8. Other mechanical updates are possible too, but we wouldn't expect anything major for such a mid-cycle refresh.