Update README.md

README.md

@@ -13,7 +13,16 @@ This repository holds the [PX4 Pro](http://px4.io) flight control solution for d
   * [VTOL](http://px4.io/portfolio_category/vtol/)
 *   Releases: [Downloads](https://github.com/PX4/Firmware/releases)
 
-### Users ###
+### Weekly Dev Call
+
+The PX4 Dev Team syncs up on its weekly dev call (connect via [Mumble](http://mumble.info) client).
+
+  * TIME: 19:00h Zurich time, 1 p.m. Eastern Time, 10 a.m. Pacific Standard Time
+  * Server: sitl01.dronetest.io
+  * Port: 64738
+  * Password: px4
+  * The agenda is announced in advance on the [PX4 Discuss](http://discuss.px4.io/c/weekly-dev-call)
+  * Issues and PRs may be labelled "devcall" to flag them for discussion### Users ###
 
 Please refer to the [user documentation](http://px4.io/user-guide/) and [user forum](http://discuss.px4.io) for flying drones with the PX4 flight stack.