coming soon in FlowStone are several new modules to talk to Home Automation devices. One of the more interesting ranges is the Netvox range of wireless Zigbee interfaces.
These include things such as:
Security products (PIR's, door switches etc)
Sensors (Temp, humidity, light, smoke etc)
Here is an article comming out in robot Magazine about FlowStone and Home Automation:
There is also support for the Owl energy monitors and the existing support for Marmitek X10 products.