Does this display work with a keypad matrix or is there an add-on planned to accommodate this?

I have heard of plans for a GX based on the Glk19264 for which I have seen a preproduction glk tri-color inverse model bounce around here (actual unit looks nicer though) but it's too early to tell if any of that will make it into any end user GX prodcts. God this would be awesome. I've been waitin...