I don’t also think that such giants like Steinberg, Yamaha, NI, and others ever will start to develop for Linux. It’s not the point for them because their main customers are using Windows or OSX, and don’t plan to switch to Linux. I also don’t know any commercial DAW, except BitWig, that support Linux in their main line of development. Yes, Reaper (honestly not big DAW) has added the experimental support for Linux, but I’m afraid it may be discarded in the near future. We can hope, but it’s just hope and nothing bigger =)