Not sure if this belongs in mobile or not, as it's tablet/phone compatible and Occulus Rift ready.
http://www.bbc.co.uk/news/technology-27403761
Was wondering when someone would put all that tech together. :P
http://www.dji.com/product/phantom-2-vision has been available for sometime, not sure if it would work with the Rift though.
That one does look nice, the AR drone might be cheaper though. ;D