Combination of Zigbee and Bluetooth 4.0
There is at least one module announced, which combines Bluetooth, ZigBee and WiFi protocols:

The RedPine M2MCombo RS9113 module combines dual-band 802.11n + BT4.0 + ZigBee into an SoC.

The module was announced in early April 2013, and is available for sampling to qualified companies.