From Flysimware's Facebook page:
Flysimware will no longer be integrating Reality's weather radar for future products. We now will be integrating the latest and best radar from MIlviz and Rex Simulations. I suggest buying this add on in the near future as the accuracy is finally arrived. For those who own other weather radar's we will try to supply a config that will allow the 2D to show up on the 3D screen. Hope you like our decision. Read below on what this new add on gives you.
Milviz and REX Simulations partnered up to solve the difficult challenges related to a fully functional weather radar without the usual limitations within the SDK: combining a modernized airborne radar with sophisticated digital signal processing, resulting in a superior multi-functional hazardous weather detection and avoidance system: we give you...
UNPARALLELED ACCURACY
The WX Advantage Radar is modeled after the Bendix RDR-4B system. Our processing algorithms enables the WX Advantage system to provide high standards of performance, reliability and extreme accuracy. We have achieved accurate placement of precipitation along the azimuth of the radar beam within its cone. As you fly in and out of precipitation, it will match what’s on the screen - accurately.