I’d dump this in the other stuff but the last summary post is pretty cluttered. I do not know the precise origin of this, it might be Gundam Ace, it might be something else, it might even be 2ch bullshit again (it looks legitimate though):

The summary for [episode 16], “Prelude to Tragedy” included new information:

A coup d’état in which Colonel Hercules, who disagreed with Federation Government and A-LAWS, took over an orbital elevator has broken out. Sergei is dispatched as a secret messenger to the orbital elevator. Meanwhile, the injured Setsuna who had launched from a Katharon base, takes Masurao’s attack.

After that, the spoiler line “I will [bring] change to my own [people]….”

「悲劇への序章」の粗筋に新情報あった

連邦政府とアロウズに異を唱えるハーキュリー大佐が軌道エレベーターを制圧するクーデターが勃発 密使としてセルゲイが軌道エレベーターに派遣される 一方、ケガを押してカタロンのアジトから出撃した刹那はマスラオの襲撃を受ける

あとセリフバレ、「俺自身を変革させる…」

 

[EDIT]
On a totally unrelated note: that really depressing track on ost3, INNOVATOR– it just hit me, it’s gonna be used re: Anew, not Ribbons.