https://www.animenewsnetwork.com/new...-years/.177386

I'm not sure what they mean by "new" as I'm pretty sure there's been a few Gundam Build shows since IBO and I think a TV series edit of The Origin; however they could mean that this the first series in a while where there's a more serious sci-fi story and the characters actually pilot the Gundams as oppose to piloting model kits using VR like Gundam build.

Mercury of course fits with the Gundam being limited to our solar system and I'm curious like IBO did with Mars some of it will actually take place on some inhabited or terraformed part of the planet. No word if it's UC or alternate at this point.