Time to rev up the Mystery Machine, gang, because we have something strange to look at. Don't forget the Scooby snacks. A picture of a mysterious HTC handset has leaked, and it is unlike any HTC device you have seen before-well, at least from the outside. Yes, it packs the usual 1GHz processor and a 3.7 inch display but the latter is not an AMOLED screen or even a Super AMOLED one. The screen is Sony's Super LCD display that HTC has promised to use instead of the rarer than diamonds Samsung manufactured screen. Other changes include the touch-sensitive buttons placed below the display that are laid out for Windows Phone 7 use, and HTC's Sense UI, which doesn't appear to be installed on the phone. Speculation is that this is the HTC Spark expected to launch this fall as part of the roll-out of Microsoft's new mobile OS.