Update: If you were thinking of getting the off-contract version of the Dell Streak to use with your carrier of choice, we've got some bad news. Your $549 will 'not' get you an unlocked device; it will still be SIM-locked to AT&T.
Perhaps if they released it with Droid 2.x, but I'll wait til the update is released AND, I want to
see/hold/try one in person, before plunking down the dough. By then, the unlock/hack community will know how to wipe it out and install a clean firmware, rid of all the at&t and or Dell bloat.