Agamon
Adventurer
Several of the above posts demonstrate (but don't "prove") something I suspect is true: with respect to formats, the market is nowhere near unified. To make everyone happy, they need to provide a whole stack of formats, and producing and maintaining such can be a hefty overhead for the business.
Thus, expect them to make a choice, and that a bunch of us will not be pleased with their choice.
Exactly. This has been my fundamental point, as well. They've pulled the pdfs and have an online distribution set up already with DDI. Even those that don't like it must see that it is what makes the most sense.