a book reference
http://www.amazon.com/Global-Sourcebook-Address-Data-Management/dp/0566081091\\
the current PostalAddress Enity will be supplimented but new entities that deal with expanded information.
these entities is fashioned after the xAL:2.0
http://www.oasis-open.org/committees/ciq/ciq.html#6
PostalService entity convers Postoffice information used for bulk mailing
This includes barcode for the address.
...
Based on Country the number of address lines and the sequence varies.
The Locality entity is not connected to the Postal address directly, it more define are area that the Postal Address may be in.
Premise Entitiy is for a building like office complex or Apartments.
Thoroughfare Entity is