Realm Awoken video

[Kyomih]

Incorrect. There is no information that the new weapon is an "upgrade" to +1. All we know it's an ilvl90 weapon (same as +1). Alternative stats, meaning it'll be better for certain classes but not others.

It's in one of the Q&As. Where Yoshi officially says you upgrade your relic from +1 to +2 (or whatever it will be called) by beating all primal ex modes. Making it the best weapon in the game with the new content.

Aw crap I wish I could get 900 myth refund . On the plus side I can now upgrade my other jobs to +1

You need the +1 to upgrade after the Extreme Primals

edit: found one obscure quote - there should be something more concrete but it takes a while to look through all the Q&A -.-

Q56: Will the extreme primal battles be part of the main story and/or be tied with the relic quest?

A56: Yes.