Whadaya know, the 100th MG will be gold plated,
From Gunota,
"With the 98th (Char's Zaku II ver 2.0) and 99th (Char's Gelgoog ver 2.0) MG kits announced, the "MG No.100 Countdown" campaign is now underway. Sponsored by Gundam Ace, Dengeki Hobby Magazine, and Hobby Japan Magazine, readers can submit their guesses as to what the 100th will be on a postcard that comes with each issue. Bandai will randomly give away 100 gold-plated versions of the 100th MG kit to contestants with the correct MS.
The 100th MG will be announced at the Shizuoka Hobby Show (May 17-20th)."