Rain will be on the CNPP Cooling Tower map first.
If everything works well we will introduce it to one more map (Radar Slaughter) in 0.58 as well.
Weather and Lighting for each map is set separately, and it requires a lot of work. If we do it too quickly, it will look terrible.
We chose to implement the rain on the CNPP map first for the following reasons:
1. It's small and easier for us to do.
2. It never had rain, so it's something new even for the veteran players.
3. It has better looking grass/trees (you can actually see ambient occlusion on the grass in the screenshots)
