Add note to updating about shifting LOADER_*SUPPORT options.

Sponsored by: Netflix

1 files changed, 6 insertions, 0 deletions

diff --git a/UPDATING b/UPDATING
index 08ec4c8ef7fe..44c9be133945 100644
--- a/UPDATING
+++ b/UPDATING
@@ -51,6 +51,12 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12.x IS SLOW:
 
 ****************************** SPECIAL WARNING: ******************************
 
+20171021:
+	As part of the boot loader infrastructure cleanup, LOADER_*_SUPPORT
+	options are changing from controlling the build if defined / undefined
+	to controlling the build with explicit 'yes' or 'no' values. They will
+	shift to WITH/WITHOUT options to match other options in the system.
+
 20171010:
 	libstand has turned into a private library for sys/boot use only.
 	It is no longer supported as a public interface outside of sys/boot.