While not exactly the exact info I was hoping for, at least it shows that SlingMedia is hard at work:
http://www.engadget.com/2008/06/08/sling-announces-proof-of-concept-slingplayer-mobile-for-iphone/
http://www.engadget.com/2008/06/08/sling-announces-proof-of-concept-slingplayer-mobile-for-iphone/