Is relic delta still a thing?

I remember when relic 10 was first released alongside relic delta. It was a huge mess and no one liked it because the feature would only benefit long term or paying players. Shortly delta recieved some sort of nerf (can't remember how or what) and haven't heard much about it since. Is relic delta even still a thing at this point? With mods omicrons and even datacrons has this mechanic just fallen off?