All of the WP7 devices will be able to run Mango. Mango hasn't been released yet for existing phones, but speculation is that it will happen on Sept 23rd. Alt

All of the WP7 devices will be able to run Mango. Mango hasn't been released yet for existing phones, but speculation is that it will happen on Sept 23rd. Although I don't know what the roll out will look like.