[gdm] NEWS: update for release

[Ray Strode <halfline src gnome org>]

commit 80d0503e797b19ee2b44f3c58ef969b2eff2cf22
Author: Ray Strode <rstrode redhat com>
Date:   Tue Feb 20 14:42:18 2018 -0500

    NEWS: update for release

 NEWS |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 40c399b..da60117 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,10 @@
 ===============
+Version 3.27.91
+===============
+- Ensure default session for user gets reported to login screen up front
+- Translation updates
+
+===============
 Version 3.27.90
 ===============
 - Add support for configuration from /run