--- a/dogdish/dispatcher.py	Wed Oct 17 10:29:33 2012 -0700
+++ b/dogdish/dispatcher.py	Wed Oct 17 10:56:38 2012 -0700
@@ -98,6 +98,7 @@
         self.handlers = [ Get ]
         self.updates = {}
         self.current_update = None
+        self.current_stamp = '0000-00-00_000000'
 
         # scan directory
         self.scan()
@@ -117,14 +118,26 @@
 
     def scan(self):
         """scan the directory for updates"""
+        prefix = 'b2g_update_'
+        suffix = '.mar'
         contents = [i for i in os.listdir(self.directory)
-                    if i.startswith('b2g_update_') and i.endswith('.mar')]
+                    if i.startswith(prefix) and i.endswith(suffix)]
         contents = set(contents)
         new = contents.difference(self.updates.keys())
         if not new:
             # directory contents unchanged from cached values
             return
 
+        for update in new:
+            stamp = update[len(prefix):-len(suffix)]
+            application_ini = 'application_%s.ini' % stamp
+            application_ini = os.path.join(self.directory, application_ini)
+            assert os.path.exists(application_ini)
+            self.updates[update] = Application(application_ini)
+            if stamp > self.current_stamp:
+                self.current_update = update
+                self.current_stamp = stamp
+
 def main(args=sys.argv[1:]):
     """CLI entry point"""