Primal battles in 2.0

[Catapult]

Yep. They'll be set up as roaming NMs which takes you into an instance (which defeats the purpose of making them roaming...)

So the fights that exist now won't exist in the same way in 2.0, probably just the ones regarding Relic, (extreme/garuda) but even then Yoshida said they'll make adjustments to the quest in 2.0, so who knows.

Just pointing out that the part I've put in bold remains unconfirmed speculation. There is certainly a good argument for it being true, but so much remains completely unknown. The next clue will come when they release the list of achievements that can no longer be obtained in 2.0. If "had me some fun" (beat Ifrit in the bowl of embers) is on the list then we'll know.

[Ryans]

Just pointing out that the part I've put in bold remains unconfirmed speculation. There is certainly a good argument for it being true, but so much remains completely unknown. The next clue will come when they release the list of achievements that can no longer be obtained in 2.0. If "had me some fun" (beat Ifrit in the bowl of embers) is on the list then we'll know.

It is confirmed that the fight won't be exactly the same as it is now. They way you encounter the Primal is part of the fight. They could easily give you the same achievement for a different strategical fight and do something like "Ifrit summons a circle of flames around you" (Bowl of Embers) when you engage him in the open world and enter the instance.

[Alkar]

It is confirmed that the fight won't be exactly the same as it is now. They way you encounter the Primal is part of the fight. They could easily give you the same achievement for a different strategical fight and do something like "Ifrit summons a circle of flames around you" (Bowl of Embers) when you engage him in the open world and enter the instance.

No, it's not confirmed. We know that Primals will roam but we don't know if the current battlefields will be gone completely.
Yoshida already confirmed that Ifrit Extreme is here to stay which also means that Garuda's battle will as well. If Garuda is staying I don't see why Ifrit or Moogle should disappear.
And then there's the chat log in one of the 2.0 screenshots where someone is telling Linkshell members to gather at the Howling Eye which is where you currently fight Garuda.
So no, it's not confirmed and it'd be quite silly to assume so. The weapons aren't worth 2 weeks of waiting and that's assuming you even find the Primal once its released.