I think part of the reason why there is such a "user revolt" (opposed to a tech or developer only revolt) is the prospect of functionality of current apps such as Amazon Kindle or Netflix or Hulu will go away, and that Apple hasn't provided any assurance that they'll stay.
Right now I'm in "wait and see" mode where I don't want to invest in the iPad 2 unless I know for sure that Hulu will still be able to function.