A friend in Japan sent me this link this morning:
http://av.watch.impress.co.jp/docs/n...29_479596.html
My Japanese is very rough but it appears to be breaking news about another Sony model to be sold alongside the PRS-T1, called the PRS-G1. It looks like it's slated for November sale and has a higher price than the T1 -- 26,000 yen to the T1's 20,000. Two colors, SD slot. I'm not entirely clear on what makes it different from the T1 at this point, but I'll keep working at it. Perhaps someone who is fluent in Japanese can help?
Edit: In retrospect, perhaps I should have posted this in News? Apologies.
Edit the Second: Sony Japan's product page for the PRS-G1:
http://www.sony.jp/reader/products/PRS-G1/