Guild Wars 2

I’m not sure how to precise my question, but will be there option to get fast backpack from fractals (this legendary shining-op-as-hell-stuff), or matses for it will be dropping on raids, which won’t be accesible at start?

No, it will be slow and time-gated.

It’s a new legendary, no way to shortcut it. and you get the materials from fractals not raids.