Quite an interesting reveal from the Chevron WP7 team. They going to be offering an unlock service that is approved by Microsoft. From what i understand you will be able to get your phone dev unlocked without a app hub account. They mentioned there is a fee but not how much it is. I am interested it will be a stop gap for me until official marketplace later this year.
Chevron WP7 Labs
Chevron WP7 Labs