XAVC is a versatile 10-bit 4:2:2 intraframe codec with a manageable data rate of 240Mbps at 4K 24FPS, but a future firmware update will also bring a long GOP XAVC-S mode as well as the standard AVCHD codec option. Dual XQD card slots provide a relay recording option for continuous shooting.
In addition to the standard composite and HD-SDI output, the PXW-Z100 will be one of the first devices to support the newly introduced HDMI 2.0 spec, which means you'll be able to monitor 4K 60fps over a single HDMI cable. The included WiFi module will provide focus, iris, zoom, and start/stop control via any internet browser, which makes the compact PXW-Z100 a great 4K option for mounting on a jib or tight spaces.
The camera is expected to ship by late 2013 and will have a suggested list price of less than $6,500. You can find more information directly from Sony, but stay tuned for more details and for an in-depth look in the near future!