I don't know if this was mentioned earlier, but here's more information.
1) The new HD PVR allows for View 1 record 1 functionality.
2) The box allows for 150 hrs SD recordings or 50hrs HD recordings and a variation thereof.
3) The box is XtraView capable.
4) Stock will be available from 27 May onwards.
5) The box will run from a twin LNB, which means someone with a current Dual View or SD PVR setup will be able to just plug the box into the existing setup.
Edit: In addition, since it's XtraView capable, you'll be able to connect it to an Existing SD PVR (with a 2x4 switch) and get View 2, Record 2.