This is weird, but maybe I never noticed it. I loaded 8.1 DP (without Update 1) onto my Lumia 822 last night. Now, when the phone boots, "Not For Resale" is on the new boot screen (Blue Windows logo on black scree) in red letters. I don't remember this from before. Maybe some unscrupulous folks have been selling the phone on Ebay. with the DP.