Just received an update e-mail from Sony. It links to this URL:
http://anon.doubleclick.edgesuite.ne...2978/link.html
Nothing particularly specific there, except perhaps (emphasis by me):
"Thank you for your patience and for requesting updates on the SonyŽ Reader,
coming this fall, in time for the holidays. It holds about 80 electronic books, is as easy to carry as a slim paperback and thanks to electronic paper, just as easy to read."