Two become one. The latest Google tablet is produced by HTC this time and replaces the models Nexus 7 and Nexus 10. It is the first product with the new Android 5.0 Lollipop, which looks pretty good. The new operating system now also supports 64 Bit processors, and the Nexus 9 obviously uses one.
http://www.notebookcheck.net/First-Impressions-Google-Nexus-9-in-Review.129995.0.html