Version 2.6.0-dev.4.0

Merge commit '942af5bd62496330ab24720333cab08a2e8e5e07' into dev
diff --git a/tools/VERSION b/tools/VERSION
index dbfca6f..f4e2a13 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -29,11 +29,11 @@
 #  * Deprecating an old ABI version:
 #     - increase OLDEST_SUPPORTED_ABI_VERSION to the version that is supported.
 #
-CHANNEL be
+CHANNEL dev
 MAJOR 2
 MINOR 6
 PATCH 0
-PRERELEASE 0
+PRERELEASE 4
 PRERELEASE_PATCH 0
 ABI_VERSION 16
 OLDEST_SUPPORTED_ABI_VERSION 16