How can I check the firmware version on my pods?

1. Tap on any pod you wish to see device information about
2. Tap the ⋯ icon in the upper right-hand corner
3. Tap View Hardware Info  
4. Firmware version will be the first item in the list. Please visit this link for full release notes.

In addition to the firmware version, you can also view the pod's serial number, MAC address and assigned IP address.