Keep the center relevant
Under Settings → Notifications (#/settings/notifications) you find the Notification Preferences card: "Manage how FleekDash communicates changes that happen on this site."
Pre-release updates moved to Fleek Labs
Release-channel preferences are no longer separate notification toggles. The Notification Preferences card explains that pre-release update preferences now live in Fleek Labs, so early-access release settings stay grouped with the other experimental features. Click Open Fleek Labs to jump straight there (#/settings/labs).
On the Labs page you can:
Toggle Early Access to get FleekDash builds before public release.
Enable Pre-release so pre-release builds show up in the regular WordPress updates screen.
See Fleek Labs for the full experimental feature and Early Access documentation.