Sony Ericsson's fourth touchscreen phone and its second Windows Mobile device, the XPERIA X2, could be made public as early as Wednesday thanks to a leaked invitation to a press event that day. The Singapore gathering appears to focus on entertainment but has been linked to the smartphone, which may also appear at the same time as a Bluetooth headset based on FCC data. The possibility exists for other phones but hasn't been supported by other rumors.

The X2 is believed to be a major upgrade to the X1 that would run the more touch-friendly Windows Mobile 6.5 and have a new panel interface that, among other changes, would add support for Remote Play to link with a PlayStation 3 for media sharing. Previous specs leaks have also hinted at major hardware improvements with a 3.5-inch OLED screen, a fast processor with 512MB of RAM, an 8.1-megapixel camera and a native 3.5mm headset jack. When it will ship isn't known, though it should be before the end of the year. [device images via JJLifeblog]