Amazon is definitely changing the game. It's forcing the likes of Tim Ferriss to reach out aggressively non-traditional online outlets to promote the book, leading up to the release date on the 20th. Like he says, if this little experiment works, it can be disruptive - that is, publishers and booksellers alike will have to rethink their current distribution channels.

Thing can only lead to one thing from a macro perspective - a "land grab" of online distribution channels in the upcoming years.