Will the celebration bundles be back later or permanently gone?

So I am on edge about buying them for exclusive relic( swain or MF). I heard they will be out of the store after the patch. Is that permanent or temporary?

tough to decide between buying bundle or BP, as I have yet to unlock a dozen champs and also don't have any 5* constellations.

Edit: Thanks! ended up buying Swain's. MF I can get later from emporium( hope it stays there -_-' )