Okay either that new paper article was wrong or those really are Changelings and Chrysalis in the forms of the Mane 6 and Celestia, also where does Starlight Glimmer work into this story by the way since you have her listed there with the description of this story.

7539457

Soon enough, seven other ponies and a little dragon stepped out before stopping beside the Princess of the Sun. Steel recognized six of the ponies as the bearers of the Elements of Harmony: Princess Twilight Sparkle, Rainbow Dash, Fluttershy, Pinkie Pie, Applejack, and Rarity. However, the identities of the light purple unicorn with the purple and cyan mane and the young dragon eluded him. But seeing them with the others made him shrug it off as just being their friends.

Its not just Celestia and the Mane 6. Plus there will be more as the story progresses.