The official Bandai Hobby Site has teased that they are to lineup the High Mobility (Surface Type) Zaku in the HG model kit series one by one at the Premium Bandai webshop in the near future! The kits' prototypes are revealed in grey 3d mold in a teaser poster.
P-Bandai: HG 1/144 MS-06GD High Mobility Type Zaku [Surface]
Release Date: TBA