We've added a state screen that appears when you turn on your device without the cable connected. It shows you at a glance what's happening with your device.
The gauge now starts at a lower minimum (50 µA instead of 250 µA), giving you more precise control at lower intensities. We've also improved how the gauge displays when actual current is lower than target: you'll see a hollow needle instead of a solid one.
Several new developer build options are now available for Toner and developer versions.