Hi Luke,
NOTE:- The JDK 12 schedule rampdown phase 1 of the release is coming up in a few weeks on Dec. 13, 2018.
JDK 12 Early Access build 22 is now available at : - jdk.java.net/12/
Rgds,Rory
-- Rgds,Rory O'Donnell Quality Engineering Manager Oracle EMEA , Dublin, Ireland