Cycles: Will fire and smoke on GPU be supported in 2.75? Will fire and smoke on GPU be supported in 2.75?
Are there any infos about the roadmap regarding this issue?
No.

I found that if you want a fast facsimile is to use OpenGL render (not in the render menu, rather a the top of the interface).  I rendered 100 frames in about a minute on a black background then "add" layer composition to the GPU smokeless animation.  Looks really good.