I wasn't able to update the E-Book between June and November. I did publish an update on November 16th 2011. Unfortunately due to restrictions in the mail system of my hosting I'm no longer able to send an e-mail to each customer for every update. For that reason I added the new form under http://ebookstoretoday.com/contact/
for you to require a link to be sent to you automatically whenever you want to get an update or re-download the book. If that doesn't work please fill in the form you find further down that page.
For all the news please check the release history you find on the product page:http://ebookstoretoday.com/iwebfaq-org-e-book/
There is no time limit.