diff --git a/NEWS b/NEWS
index 96ecc2d7ea..c6ea88ac72 100644
--- a/NEWS
+++ b/NEWS
@@ -36,8 +36,36 @@ USE AT YOUR OWN RISK.  NOT RECOMMENDED FOR PRODUCTION USE!
   paragraphs.
 * Support enabling ipv4ll alongside DHCPv4 and static addressing.
 * Support configuring "ipv6.mtu".
+* Honor "nm.debug" kernel command line to enable debug logging of
+  NetworkManager.
+* NetworkManager reads the kernel command line "/proc/cmdline" for several
+  purposes, including "nm.debug" for enabling debugging and the
+  "match.kernel-command-line" setting in the profile. NetworkManager now
+  first looks now for "/run/NetworkManager/proc-cmdline", which allows to
+  overwrite the command line.
 * Several internal improvements.
 
+The following changes were backported to 1.38.x releases between 1.38.0
+and 1.38.4 are also present in NetworkManager-1.40:
+
+- 1.38.4
+
+* Fix DAD for DHCPv6 addresses.
+* Wi-Fi: improvements for OWE networks.
+* Support EC private keys
+* Various bugfixes.
+
+- 1.38.2
+
+* Fix race condition with pppd that caused failures when activating
+  PPPoE connections.
+* Unbreak DHCPv6 over PPP.
+* Don't ignore IPv6 DNS servers received from PPP.
+* Fix crash while checking WEP capability of Wi-Fi interfaces.
+* Ensure DHCP is restarted every time the link goes up.
+* Fix struct alignment issues seen on some architectures.
+* Various other bugfixes and improvements.
+
 =============================================
 NetworkManager-1.38
 Overview of changes since NetworkManager-1.36