So I watched ep. 6 of 00, and I loved that last battle. It was so cool to finally see all of the Gundams in one battle, and it's neat to see the Virtue finally doing stuff. But I thought the Seven Sword upgrade was for the 00? It confused me when it was mentioned in reference to Exia. I'm not a fan of the outro song, however, it's really jarring.

I don't remember any refrence to Seven Sword as its not canon (AKA not in the show itself and Sunrise's policiy on canon puts it in the gray area)

The sixth episode is called Seven Swords, and when the guy shows Setsunata Exia's new GN blades, Lockon says "it's the Gundam Seven Swords". It could just be a translation error, but I doubt it - he pretty clearly says "seven sword" in English.

Wasn't seven swords the codename for Exia?

Foreshadowing lol.

But I think the term Seven Swords is a general term used to mean "Very heavily armed". So maybe the suit namers and writers had a similar thought lol.

I see, that makes sense.

With the blades added in that episode Exia literally carries seven swords, that's all.

The 00 had a kit with seven swords too, but that's outside of the show.

I just finished Turn A gundam:

It is hands down the best gundam series, the animation is BEAUTIFUL, the characters are fantastic. the story is engaging and the mobile suit design is top notch. I am blown away by it, like I am a huge gundam fan, and by far, this blows everything else out of the water, and the best part being technically an AU series it can be watched standalone without previous gundam knowledge

-GN Sword (1)
-GN Blades (2,3)
-Beam Sabers (4,5)
Where's swords six and seven?

If I remember correctly, six and seven are the GN Beam Daggers. If you ever see Setsuna pop a beam saber and throw it at the enemy suit, you just saw them used. Rather underused, but not as underused as the GN Vulcans :lol.