Customers who currently own GY-HM650s will be able add the new features at no charge with a firmware upgrade.

Full press release, photos located here:

JVC to Debut New Products, Upgraded Capabilities for GY-HM650 ProHD News Camera at NAB2013 from DV Info Net (http://www.dvinfo.net/news/jvc-to-debut-new-products-upgraded-capabilities-for-gy-hm650-prohd-news-camera-at-nab2013.html)

The Livestreaming function sounds very promising. Would hope it would be compatible with something like a Teradek Bond to accept multiple antennas like a LiveU. Single antenna 4G streaming I fear might be inconsistent.