DiabloFans

Not as such.

2.1 is adding new legendary gems which can be put in rings and amulets (not yet on the PTR).

And it is adding a new item "Ramalandi's Gift" which can add a socket to a weapon that doesn't have one.

But actual current gems are not changed.

Read more about those two new things at : http://www.diablofans.com/news/48123-legendary-gems-character-copy-cooldown-seasons-to

they should allow legendary gems in weapon to fight the only-emerald thing