Looks like the next level of Relic is about to come..

[Alistaire]

Relic was the item itself restored

Relic +1 was the relic, infused with spirits. You didn't actually unlock its "true power", you simply infuse it with stuff.

What I don't get is why they got rid of +1 and favors "Zenith" suffix. But that's a different story

Next upgrade will start with y, then after that x...