SlingPlayer Mobile for iPhone Only for Slingbox PRO, SOLO, and PRO HD Users
Current Slingbox functionality will not be affected if you choose not to upgrade, but software like SlingPlayer Mobile for iPhone and future services yet to be announced will only be supported for customers using Slingbox SOLO and Slingbox PRO-HD products or forthcoming SlingLoaded products.
See below
http://www.slingcommunity.com/blog/e...-PRO-HD-Users/