That's a device feature, rather than WM6 feature I understand. There's
nothing to stop existing devices from doing it, except support by the
manufacturers. They're more likely to add it to new devices (which
happen to be using WM6) than old ones. AFAIK, I've only seen one WM6
device announced which supports SideShow (and made a big thing of it) -
the rest haven't said anything about it - so I assume that they won't
support it.
