I notice that the Intel/Eclypsium training at Black Hat USA 2018 is no longer listed. Sounds like not enough people signed up?!
AFAIK, the next opportunity to get Eclypsium CHIPSEC training is at REcon (and REcon appears to have cheaper training rates than Blackhat):
There’s also the training materials from older training from Intel ATR/CHIPSEC team, available here: