I guess there's not going to be a reply!
It clearly says:
- iPad 2
iOS version 4.2 or later
SlingPlayer supports streaming over 3G or Wi-Fi
Requires the latest iOS, SlingPlayer & HDS-600RS software update
At least 15 MB free memory is required on the iOS device to install the SlingPlayer
See related document below for network speed requirements
But else where it says that you have to use the iphone app on a lower resolution for the HD enabled Echostar. So what are slingbox doing giving links to an expensive app that doesn't work with the product in the way promised?
And I cannot see a cost-free downgrade path to the iphone app - so I would have needed to shell out for two apps.