It seemed odd that while the article said "We have pushed updates to both the Early Access and Normal update channels of XenServer 8.4," the updates did not appear in the Normal update channel for me. I switched back and forth between the channels twice, synchronizing each time, and the updates only showed up in the Early Access channel. This made me wonder if they had pulled the updates from the Normal update channel. I went ahead and installed them from the Early Access channel because we currently run XenServer only in test with XCP-ng in production.