This was reported on the Dutch news website www.nu.nl:
Apple changes iBooks Author EULA after criticism
I'll translate the article below:
After much criticism, Apple has changed the EULA of iBooks Author. It now states much clearer that Apple does not become the owner of the content that is made with iBooks Author.
When iBooks Author appeared last month, it caused a lot of commotion. According to bloggers and copyright experts, the EULA stated that Apple would become owner of the contents of the iBooks. According to Apple this is not the case, and therefore, the EULA has been changed.
It now clearly states that the book may be published on multiple platforms, as long as the iBook format (emphasis mine) may not be distributed anywhere else but through Apple. If the book is converted to a PDF file, then it may be sold anywhere, and Apple will not demand to be paid a part of the profits.
"You will keep all the rights to your own works", says Apple, in the new EULA.
The company released iBooks in Januari. It should be possible to use the software to easily create eBooks yourself.
I think that this rewrite is fine: Apple seems to explicitly state that you can do whatever you want with iBooks Author and the non-iBook formats it can output, as long as you don't sell the iBook format version anywhere else except for the Apple store.
I can live with that.