Nope. Just crafting eternals. Eternals will stay the way they’ve always been. Unmodifiable so it’s a prized legend and it’s totally possible to create builds despite the eternal limitations. Eternals are still very powerful though and even more so with the new legends. So no crystal crafting eternals except changing class, talent and nature’s and adding mythstone.
The fundamentals of eternals have not changed their affixes cannot be edited in any way eternals may simply now be created on demand if you have the dust required and have found/unlucked them