cmd/tailscale/cli: unhide auto-update flags and mark update as Beta (#9954)

Updates #755

Signed-off-by: Andrew Lytvynov <awly@tailscale.com>

cmd/tailscale/cli/set.go

@@ -67,8 +67,8 @@ func newSetFlagSet(goos string, setArgs *setArgsT) *flag.FlagSet {
 	setf.StringVar(&setArgs.hostname, "hostname", "", "hostname to use instead of the one provided by the OS")
 	setf.StringVar(&setArgs.advertiseRoutes, "advertise-routes", "", "routes to advertise to other nodes (comma-separated, e.g. \"10.0.0.0/8,192.168.0.0/24\") or empty string to not advertise routes")
 	setf.BoolVar(&setArgs.advertiseDefaultRoute, "advertise-exit-node", false, "offer to be an exit node for internet traffic for the tailnet")
-	setf.BoolVar(&setArgs.updateCheck, "update-check", true, "HIDDEN: notify about available Tailscale updates")
-	setf.BoolVar(&setArgs.updateApply, "auto-update", false, "HIDDEN: automatically update to the latest available version")
+	setf.BoolVar(&setArgs.updateCheck, "update-check", true, "notify about available Tailscale updates")
+	setf.BoolVar(&setArgs.updateApply, "auto-update", false, "automatically update to the latest available version")
 	setf.BoolVar(&setArgs.postureChecking, "posture-checking", false, "HIDDEN: allow management plane to gather device posture information")
 
 	if safesocket.GOOSUsesPeerCreds(goos) {

cmd/tailscale/cli/update.go

@@ -20,7 +20,7 @@ import (
 var updateCmd = &ffcli.Command{
 	Name:       "update",
 	ShortUsage: "update",
-	ShortHelp:  "[ALPHA] Update Tailscale to the latest/different version",
+	ShortHelp:  "[BETA] Update Tailscale to the latest/different version",
 	Exec:       runUpdate,
 	FlagSet: (func() *flag.FlagSet {
 		fs := newFlagSet("update")