FREEVIEW?

Have been watching the box the last couple of nights and they have been plugging freeview.
Does anyone know if
(a) it will run on existing set top boxes
(b) it will have multi viewing like the freeview in the uk and foxtel (where you can choose what game you want to watch by pushing the red button)
(c) and they have been saying 15 channels. Are these just rehashes of the existing channels in hd or will there be different viewing on each channel?
Does anyone know if
(a) it will run on existing set top boxes
(b) it will have multi viewing like the freeview in the uk and foxtel (where you can choose what game you want to watch by pushing the red button)
(c) and they have been saying 15 channels. Are these just rehashes of the existing channels in hd or will there be different viewing on each channel?