We’ve just learned that SlingPlayer’s now accepting emails to notify users when SlingPlayer Mobile is available. Still no concrete word on “when” that will be exactly, but I suspect we won’t have to wait too long into the summer months to see the app launched.
Currently, only the UK site has the sign up form (that I could find, anyway) so just be sure to know that it could be a separate launch from other regions. Pricing hasn’t been confirmed, but as Android Community points out, the iPhone version is $30 if you need to get an idea.