In their FAQ
here mentions an upcoming color model not long after the greyscale one. I am eager to see it come to fruition, though I am not enthusiastic about the underlying WinCE OS.
In recap after all I've read, it appears that there will be several readers supporting B&N: their own-branded 6", the iRex, and the letter-sized Plastic Logic.
Greets,
Siorghlas
Twit me!