Castalia 2.0 (for OMNeT++ 3.x) has been released. Castalia is a simulator for Wireless Sensor Networks (WSN), Body Area Networks (BAN), and generally networks of low-power embedded devices. It offers an advanced channel model based on empirical measurements that supports mobility and temporal variability. It also offers many features that are often neglected in network-level simulation, such as realistic radio modeling and access, node clock drift, and physical process modeling. Castalia is an expandable, modular and user-friendly simulator with a growing research community. For more info go to