CORENET 2.0 and CORENET X are different systems. CORENET 2.0 is mainly a tech refresh of the current CORENET. CORENET 2.0 will eventually be replaced by CORENET X, which is slated for implementation by the end of 2023.
CORENET X aims to change the current practice of QPs dealing separately with multiple regulatory agencies and producing different versions of building plans thereafter. It will allow the project team, which includes the QPs, to collaborate and review their designs in the model together, detect possible major conflicts before construction, and produce a coordinated BIM model for submission and regulatory approval.