The DIY Drones telemetry kit, which proved more popular than we were ready for and quickly went out of stock when we released it back in April, is now back in stock. It now offered at a lower price ($150, a savings of $15 from the previous price) and includes a cable to connect the airborne Xbee module to the APM board.
This kit works great with both APM and Arducopter. Both modules are pre-configured and ready to go, right out of the box. Orders placed now will ship on Monday.