This 6-inch phablet is now official and has the specs mentioned by the latest rumors, including a quad-core Snapdragon processor, 2 GB RAM, and 32 GB internal storage. The price can go as low as $99 USD for new Cricket Wireless customers (regular price is $150 USD).
http://www.notebookcheck.net/ZTE-Blade-X-Max-hits-Cricket-Wireless.220466.0.html