When GQuuuuuuX was first announced, Bandai didn't want us knowing what direction the show was going so they didn't reveal any mobile suit designs, instead listing them as "Tentative Mobile Suit" A through E. We've been taking preorders for those five mystery suits since February, but now we finally know what they are!
To make sure you ordered or will order the exact suit you want, here's a guide to what started as what:
HG GQuuuuuuX - Mobile Suit A (Tentative) -> HG gMS-01 Gelgoog (Shiiko Sugai Custom)
HG GQuuuuuuX - Mobile Suit B (Tentative) -> HG gMS-01 Gelgoog (Bocata Custom)
HG GQuuuuuuX - Mobile Suit C (Tentative) -> HG MS-15/H Gyan Hakuji-Packs (Xavier Olivette Custom)
HG GQuuuuuuX - Mobile Suit D (Tentative) -> HG gMS-κ GFreD (Gundam FreD)
HG GQuuuuuuX - Mobile Suit E (Tentative) -> HG MS-09 Rick Dom (Gaia/Ortega Custom)
Of course, there were also kits announced with their names and information available right away. All of those are listed here as well in chronological order:
HG GMS-Ω GQuuuuuuX
HG MS-06-SSP Police Zaku
HG gMS-α Red Gundam
HG RGM-79 Light-Type Guncannon
HG MS-06 Zaku (GQ Ver.)
HG RX-78-02 White Gundam
HG MS-06S Char's Zaku (GQ Ver.)