Sony Ericsson has officially unveiled the Xperia X2, the successor to the company’s expensive, unlocked Xperia X1 smartphone. The X2 will feature an 8.1-megapixel camera, a bundled 4GB microSD card, and yet another refreshed UI for Windows Mobile (though this time, it will be a 6.5 device) including 13 pre-loaded “panels,” according to a company [...]