Ever wish you could grab a new Sony Ericsson handset with a full QWERT keyboard, 3.2 megapixel camera, aGPS, Wi-Fi, Bluetooth, HSDPA/HSUPA, all running atop a beautifully skinned version of Windows Mobile 6? Turns out today might be your lucky day. SE has just unleashed the XPERIA X1 at the Mobile World Congress, and from the looks of things, this is going to be one hell of a competitor. The handset sports a slide out / slide up keypad that looks like a cross between a Sidekick and an HTC Tilt, with navigation accomplished by way of a 4-way dpad and an optical joystick. The handset also sports a custom “panel interface” that appears to provide TouchFLO-like icon-based navigation. No word on price, but we should see it launch in “select markets” by the second half of 2008. Nice!