Sling's set to release an updated Slingplayer this spring for Windows Mobile on both the touchscreen and non-touchscreen versions, with the new features being more optimized supports for newer handsets. They're also working on an optimized Nokia N95 8GB client, and going to expand their stand-alone Symbian clients to include UIQ support as well. What probably interests people more than optimizing an already-existing client is the possible introduction of a new client for the iPhone, which Sling tells us they're currently evaluating the iPhone SDK for. TV on the iPhone's generous screen means you'll never be bored again.