[Powerman293]

So in other news, the first trailer for Thunderbolt released alongside screenings of Gundam the Origin 2. Here's one of the stills, as the trailer hasn't been released yet.





I also found a better summary of Thunderbolt's plot:
The first part of the story takes place in the ruins of Side 4. It's known as the Thunderbolt sector because the colony debris produces static discharges when they collide with one another, giving the impression of lightning. The area has some strategic significance since Zeon uses it as a supply route to A Bao Qu, thus it is guarded by a special unit of MS Snipers called "The Living Dead." All of them have missing limbs and are part of some program where Zeon recycles its injured soldiers as pilots who use a prosthetic limb interface to control their mobile suits. Their ace is Daryl Lorenz who is one of their top snipers and the main Zeon protagonist.
Meanwhile, a Federation unit made mostly up of the former inhabitants of Mua are tasked with clearing out the sector and opening a hole in Zeon's supplies. Their attempts to take it are disastrous, but one daredevil pilot named Io Flemming manages to sneak up and hijack one of the sniper's mobile suits which eventually leads in him being entrusted with a Gundam modified with heavy armor and additional boosters to flush out the remainder of Zeon's forces.
The second part of the story seems to take place sometime later and a new Gundam is introduced.