They are re-releasing all 3 volumes of the Gundam X manga again in Japan. I hope they will include the "Next Prologue" chapter which was only included in the Bluray set in Japan few years ago.
Or maybe they will actually start the new manga which will continue after the "Next Prologue" since Tokita Kouichi has finished the new Gundam Wing G-unit recently.
Edit: Found the new cover for all 3 volumes. The 3rd volumes says "Next Prologue" so we will be getting this chapter on the 3rd volume!