Other D&D Variant C7D20 - Anything come of this?

[Elodan]

or did it just fade into the Ethereal Plane?

 

[Morrus]

Pretty much. They pivoted to 5E supplements instead. It was probably similar content but repackaged/rebranded, maybe after they saw everybody in the world was making a version of 5E.

 

[mamba]

or did it just fade into the Ethereal Plane?

since WotC caved on the OGL the day after they announced this, they pivoted from a standalone clone to a bunch of supplements

DriveThruRPG

www.drivethrurpg.com

A Dungeon version was kickstarted recently

https://www.drivethrurpg.com/en/product/464636/vault-5e-a-life-well-lived

https://www.drivethrurpg.com/en/product/474722/vault-5e-mortar-pestle

https://www.drivethrurpg.com/en/product/481297/vault-5e-hammer-anvil