--- a/mozilla/l10n-changesets_mobile-beta.json
+++ b/mozilla/l10n-changesets_mobile-beta.json
@@ -47,17 +47,17 @@
     "revision": "07118becc133",
     "platforms": ["android", "android-multilocale"]
   },
   "da": {
     "revision": "fbec55bbfd36",
     "platforms": ["android", "android-multilocale"]
   },
   "de": {
-    "revision": "2abaa7aa2259",
+    "revision": "fd0478d30816",
     "platforms": ["android", "android-multilocale"]
   },
   "dsb": {
     "revision": "4b8493859a20",
     "platforms": ["android", "android-multilocale"]
   },
   "el": {
     "revision": "0032cf26c9ad",
@@ -67,17 +67,17 @@
     "revision": "e7242fb885cf",
     "platforms": ["android", "android-multilocale"]
   },
   "en-ZA": {
     "revision": "118b4d922a17",
     "platforms": ["android", "android-multilocale"]
   },
   "eo": {
-    "revision": "e9106a2d6933",
+    "revision": "ae85ceef76b2",
     "platforms": ["android", "android-multilocale"]
   },
   "es-AR": {
     "revision": "9c2302128dbe",
     "platforms": ["android", "android-multilocale"]
   },
   "es-CL": {
     "revision": "714449dca4ba",
@@ -239,17 +239,17 @@
     "revision": "ae1b305dc7b8",
     "platforms": ["android", "android-multilocale"]
   },
   "pl": {
     "revision": "cd84bd057189",
     "platforms": ["android", "android-multilocale"]
   },
   "pt-BR": {
-    "revision": "3bf1b20b13a2",
+    "revision": "2f5d57cbae27",
     "platforms": ["android", "android-multilocale"]
   },
   "pt-PT": {
     "revision": "900fd62886bb",
     "platforms": ["android", "android-multilocale"]
   },
   "rm": {
     "revision": "d6d39da9b87c",

--- a/mozilla/release-fennec-mozilla-beta.py
+++ b/mozilla/release-fennec-mozilla-beta.py
@@ -15,31 +15,31 @@ releaseConfig['messagePrefix']       = '
 
 # Basic product configuration
 #  Names for the product/files
 releaseConfig['productName']         = 'fennec'
 releaseConfig['stage_product']       = 'mobile'
 releaseConfig['appName']             = 'mobile'
 releaseConfig['relbranchPrefix']     = 'MOBILE'
 #  Current version info
-releaseConfig['version']             = '50.0b2'
+releaseConfig['version']             = '50.0b4'
 releaseConfig['appVersion']          = '50.0'
 releaseConfig['milestone']           = releaseConfig['appVersion']
 releaseConfig['buildNumber']         = 1
-releaseConfig['baseTag']             = 'FENNEC_50_0b2'
+releaseConfig['baseTag']             = 'FENNEC_50_0b4'
 #  Next (nightly) version info
 releaseConfig['nextAppVersion']      = releaseConfig['appVersion']
 releaseConfig['nextVersion']         = releaseConfig['version']
 releaseConfig['nextMilestone']       = releaseConfig['milestone']
 #  Repository configuration, for tagging
 releaseConfig['sourceRepositories']  = {
     'mobile': {
         'name': 'mozilla-beta',
         'path': 'releases/mozilla-beta',
-        'revision': '865939f4946d',
+        'revision': 'f4b45ea3c0c8',
         'relbranch': None,
         'bumpFiles': {
             'browser/config/version_display.txt': {
                 'version': releaseConfig['version'],
                 'nextVersion': lambda x: x
             },
             'browser/config/version.txt': {
                 'version': releaseConfig['appVersion'],