<http://schema.org/description>
"Google today announced a program that will let Google Glass owners swap out their device for a new, updated version. The hardware upgrade will allow Glass to work with future lines ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2013/10/28/google-offers-glass-owners-option-swap-device-new-one-works-shades-prescription-frames/>