HG 1/144 MS option set 8 and 9 comes with HG 1/144 Geirail conversion parts to make Geirail Scharfrichter. MS Option set 9 also revealed Landman Rodi's legs to be used with HG 1/144 Man Rodi.
HG 1/144 Option set 8 will be released in February 2017 for 648 Yen, and HG 1/144 MS Option set 9 follows in March 2017 for the same price.
And it looks like we might get more of these amazing conversion parts in the future MS option sets.
MS option set 9 also came with HG Graze Ground Type parts [feet]