The screen is from PVI, and should be available to anyone who wants it. There is a question of glass vs plastic (flexible), and Amazon seems to have gone with glass (
Robertb on plastic vs glass).
Bookeen has expressed interest in the past in producing a large screen reader.
The
Netronix roadmap lists Q1 2009 but that must be pessimistic and others (e.g. Robertb) have said these may be available in the fall (
First glance at Astak's Mentor line).
The
Hanlin V9 has been featured on their web page forever, but they don't quote a delivery date and it has apparently been redesigned (
EZ Reader Ture??).
The
Astak Spectrum probably uses the PixelQi LCD screen and will likely be available early next year.