Newer previews often showcase 4K or 8K PBR (Physically Based Rendering) textures for seat fabrics, carpets, and overhead bins.
Specific "freighter cabins" for cargo variants like the 737-800BCF, featuring modified interior modeling. PMDG 737-800: The Cabin | Real 737 Pilot cabin_previews.7z
The "detailed features" typically found in such a cabin preview or update include: Newer previews often showcase 4K or 8K PBR
Small immersion features like in-flight magazines, safety cards in seat pockets, and static in-flight entertainment (IFE) displays. Configuration & Customization safety cards in seat pockets
Included camera configuration files ( camera.cfg ) that provide preset views for the jumpseat, passenger seats, and wing views.