[latexila] NEWS file: start to write news for next release

[Sébastien Wilmet <swilmet src gnome org>]

commit 9b2f5f01b8f740928c6cb4ef51ffaf1fc92af51b
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Nov 24 21:50:00 2017 +0100

    NEWS file: start to write news for next release

 NEWS |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 588d49c..82e7a47 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,21 @@
 LaTeXila NEWS
 
+Release 3.27.1, 201X-XX-XX (not yet released)
+--------------------------
+* Port to GtkSourceView 4 and Tepl 4.
+
+* Internal code refactoring, use more Tepl features:
+  * Use more Tepl GActions.
+  * Let Tepl handle the window title.
+  * Implement TeplAbstractFactoryVala subclass.
+  * Other small things.
+
+* Port LaTeX menu to GAction and C in the liblatexila.
+  Math menu in progress.
+
+* Other small improvements.
+* Translation updates.
+
 Release 3.26.1, 2017-10-29
 --------------------------
 * Translation updates.