WikiDevi will be going offline 2019-10-31. For historical dumps of the database, see 'WikiDevi' @ the Internet Archive (MW XML, Files, Images).
Final dumps will be made available after the site goes offline.
There is no chance the data will not live on, in some form - even if it isn't 'WikiDevi' anymore. For example, see TechInfoDepot.
Google indicates this is the Kindle Voyage, which seems to have already been released in Japan (see amazon.co.jp)
Two FCC filings note models of NM460GZ - one under the grantee code of Romano LLC (AKD) and another under that of Cymbidilum LLC (A4Y).
This device was under short-term confidentiality, but that expired 02/02/2015.