How to do it or its just bait for us to see whats comming?

Raise them to level 50, then the upgrade window will be replaced with an evolution one next time you select it. The massive honor medal costs compared to current drops combined with limited shop stocks mean it's effectively still a preview.

lol 10k medals for evolving one piece of trash equip

Yeah, get them equip ready and leveled up if they aren't already

I expect we will get the missions to grind to make it obtainable. hopefully soon

I am getting the 3 rainbow fragments that I can from the shop, 2 down 1 to go ...Expensive but the best we got right now.
I will say I am getting excellent ampy drops from that 100 stam mission and along with running the secret gardens getting life crystals and manyu out the ying-yang though

I'm guessing it will be just like the blooming materials that were very expensive and almost un-obtainable and then later we got maps to grind them, and someone on here said we can expect something like that next year in maybe 3 months or so

I sure hope it comes soon, needing 20k Stam and 4 months (10 shards, 3 per shop rotation of 30 days) just to upgrade and get a few hundred extra Atk and def is not really worth the time unless you have already got all your 6* girls to max level / max 2nd affection / max ampies.

Soon and not "soon"
Kerria, Anemone, Dendro here before I worry about any of the others. They don't even exist!