Hello,
Thank you for your patience. We have confirmed that Amazon does have the updated book available. We have also confirmed with customers that they were able to obtain the update by speaking with support.
They were not able to get the update themselves. Only when they spoke to support were they able to have support push the updated book to their account.
We are working on having Amazon push the full ebook to first time buyers.
At this moment it seems the only way is to buy the book and have Amazon push the update to you.