I just sync'd my local update mirror (through definitions update 16682) and see no PCU files, nor do I see a newer release listed in the EEA 5 download page.
Will EEA 5.0.2271.0 receive a similar update for KB4056898 on Windows 8.1?
EDIT: Local workstation just upgraded to module version "1533.3 (20180104)"--answering my question. Leaving post as confirmation for others.