It sounds like you're describing a new Master Grade (MG) Gundam model kit with advanced features and design elements. Here's a summary of the key points based on your description:

• Complete Reproduction of Latest Gundam Design: The kit faithfully reproduces the latest design of Gundam with meticulous attention to detail.

• Detailed Color Separation: Utilizes up to 8 colors for precise color separation on external parts. This enhances the realism and density of the metal and overall structure.

• Realistic Decals: Introduces realistic decals, a first for MG kits, which further enhance the metal and mechanical feel of the model.

• Movable Armor System (Movable Armor System): Incorporates a new interpretation of movable armor, enhancing articulation by linking the internal movement of armor parts.

• Improved Articulation: Shoulder armor and backpack covers are movable, improving the freedom of arm movement. The mechanism for opening and closing the shin armor enhances ankle articulation.

• Transformable Core Fighter: The Core Fighter can transform and be stored inside the body.

• Paintable Internal Structure: Uses paintable materials for the internal structure, allowing for customization.

This MG Gundam kit seems to be pushing the boundaries of detail, realism, and articulation, aiming to provide a highly customizable and dynamic building experience.