Nope no hear yet. but for an extra 100 mAh, they better be relatively cheap, because although a 100 mAh may be a significant increase in some books, it is not too dramatic over the life of our present eG0 batts.
My opinion on our present batts is that they are a "true" 650, comparible to 800-900 batts. Therefore if the homework was done then that 100 extra mAh, might be worth it. Might being the operative word. I don't get psyched with all this hooplah.