When will we have a BlackBerry client?

If the iPhone and iTouch are inches away from getting a client, when will the rest of the smartphone world have a chance at using this great service? The approval process for RIM is bound to be less draconian and demanding than Apple. The USA already have Slacker Radio, but for many UK, etc BlackBerry users there isn't a lot of choice. (Or competition for your company, to look at it in a business favorable light.)

When will this mere fantasy become a reality?