Suggested on the TeleRead
forum: The addition of some designation for versions of OEB, so users can confirm that future versions of ePub will run on their devices (IOW, you won't buy a version 4 OEB file to read on a version 2 OEB reader, and find out it won't display properly).
Of course, presently there are no multiple versions... this is a consideration for the future, obviously. I suggested a series of white dots could be added to the body of the circle, one for version 1, two for version 2, etc, which should be understandable to anyone across cultures.
Adding the word "ePub" to the logo was also suggested, though I'm resistant to the idea of adding text that won't mean anything to non-English-speaking (or Alphanumeric-character-reading) cultures, of which there are a few.