Are trail renderers still lacking dynamic batching?

I have read in the documentation and on the forums that trail renderers cannot be batched, resulting in one draw call per renderer. However, the documentation isn't always up to date and all of the forum threads on the topic are pre-Unity 5. I have tested this and found that they appear to batch, with 4, 8, 16, and 128 trail renderers with a single material being only a single draw calls. As I am developing for mobile, draw calls are very important. Can anyone confirm the batching?