I bought my Dell Streak at Best Buy with a locked AT&T sim card 3 months ago and I've been waiting, and waiting, (like you all) for 2.2. The whole reason I purchased this is because of the screen size so I can enlarge the text size and be able to read the screen.  Unfortunately this was a feature missed in Android 1.6 (which is beyond me?)

Not Dell, AT&T nor Best Buy will stand up and take ownership of this very bad customer experience, they are all pointing fingers at each other.  Meanwhile customers are the ones who are left in the dark and paying for it.  I hope someone soon starts caring and provide the upgrade or at a minimum, some decent information to us.