Can someone confirm this?

[Elamys]

According to this, there will be a set that competes with the Ala Mighan set. It will a higher item level than Ala Mighan, but won't have the overmeld slots. Ala Mighan will be better if its overmelded, but if you don't want to do that, you get the new set. Is this the new yellow scrip gear?

Looks like it. This has traditionally been the case with the crafting gear - you can get a set without overmeld slots that will allow you to do endgame crafting, but there is a crafted set that you can overmeld with better stats if you're willing to invest in it, that will give you an easier time crafting.