The email EvilDragon is originally talking about is from quite a while ago to the people who responded to Craig's "what upgrade path would you be comfortable with" survey.
If you didn't get the survey, or the followup email, basically what happened was Craig made a survey informing people that money was gone and asking if they'd be willing to pay a fee to upgrade from the original 600Mhz Pandora they were promised to a new and shiny 1Ghz Pandora. This thread is the fallout from that particular bad decision.