From Booktradeinfo:

Publishing Isn't One Digital Industry
Monday 21 Sep 2009
The one thing that is certain about publishing tomorrow is that it will be different to today. Many will see digital as just another book, or the same book in a digital jacket. Others will see digital as a marketing opportunity to get digital out, not last, but first.
After all if digital pricing is going to be cheaper then why not use it as the leader and not automatically presume it has to be at the end? Others will see that trying to squeeze something that was designed for the printed page onto a screen doesn't always work and giving it the same constraints could be viewed a madness.
Brave New World