Sources close to Orbitcast have revealed that Sirus is finally submitting their uSirius StarPlayr to the App Store this weekend. Once accepted, subscribers will be able to enjoy Sirius XM on their iPhone.

With Sirius being so late to the party, the only question is whether the service is really worth paying for when there are so many good, free streaming apps out there like Pandora and Slacker. [Orbitcast via The Motley Fool]