I wrongly wrote here first what i had wrote. My mistake, but i was right regarding esd files of 17133.1 in 17134.1 thread. Peace
They are only useful to switch between editions via new License Switch. Enter the Enterprise or Pro for Workstations key into a Pro install to initiate the switch (needs a reboot to complete). Or for people manually dealing with KMS needing the matching gVLK.
There is only 1 sticky RS4 thread, this thread is for a build which was supposed to be RS4 but dropped due to a major bug(hence the word "demoted" in thread title).