I would certainly help beta test as well. I currently use TouchDAW on Android (for remotely controlling Cubase 6.5 and Reason 6.5), but I’d much rather have something dedicated to Cubase. It isn’t much use other than for simple tasks like starting/stopping playback/recording.
TouchDAW ran well on my HTC Desire, but I am now running it on a much snappier Samsung S3. Looking forward to seeing this released.