Electronic music stands have been around for awhile. I have hesitated from buying one because of the eye strain associated with using an LCD screen. With advances in e-ink technology I hoped that a company would produce an e-ink stand. Various designs have been shown over the past few years.
http://www.yankodesign.com/2008/02/0...tin-high-tech/
http://continuuminnovation.com/Work/...lio/E-Ink.aspx
Unfortunately, to the best of my knowledge, no company has actually taken the initiative to produce such a product. This surprises be, because I think that there is a market for them. There is a substantial amount of sheet music on the net. However, the cost of printing the music can be substantial. I think that many musicians would realise that the money that you would save by not having to print the music would pay for the stand in a short period of time.