I guess, maybe happening in 3.0 or later, a lot of the upgrades since Zenith will be obsolete anyways. They can't keep them up and running all the time or people will fall way too much behind. And I doubt a new player finds it entertaining to grind his ass out directly after hitting Level 50. So my guess is: either the original Relict quest will be changed so it directly provides you with a weapon that's much higher than Level 90 or there will be a new quest sourrounding it.