Simply put the XiP series with the XiP 813 SUPPOSEDLY available by the fall is the whole home DVR solution, not the ViP's. The XiP is far too different than the ViP and the Sling Extender, which have limitations by comparison. The XiP concept is all tuners on a network (3 per box), and easy addition of another XiP for integration of 3 MORE tuners and another box for 3 more tuners, and the clients in the other rooms all with FULL capabilities and none of the current limitations that all the DVR whole home solutions offered by any other MVPD have, along with USB OTA antenna integration to add OTA channels to the network, as well. This is supposed to be a full TV1 (even PIP) all HD experience in all rooms with absolutely no features or capabilities lost in the other rooms.
The XiP is FAR too different an architecture from the ViP's. However, the ViP's do have the ability to Sling (stream) for a an HD in another room experience (the Sling Extender almost ready for release according to Scott). We shall see how far AFTER the intended release date the XiP is really offered.