Every now and then, I encounter some mention of other devices being shown in the power indicator. For example, along with the laptop battery, listing the battery level for an iPod being charged over USB. I understand the specification mentions that, too, but I definitely haven't seen it with any of my various devices that have batteries in them.
So, does that feature truly exist right now? Any information on what hardware is supported and whether that support can expand in the future? Anything people can do to help? :)