Are mini-smartphones an emerging trend? Sony Ericsson seems to think so. They just announced two diminuitive Android-powered devices. The HD capturing Xperia mini which is similar to the recently released Xperia Arc (except it is smaller and fatter) and the Xperia mini Pro that features a slide-out keyboard. Both feature Google Android 2.3 Gingerbread (which means they can be used as mobile hotspots to accompany notebooks and tablets).