Sony recently bought Ericsson's share in Sony Ericsson for $1 billion dollars. What is Sony's next project. The answer to that question could very possibly be the Sony Ericsson Xperia Arc HD. Specs wise, the Xperia Arc HD is rumored to feature a  4.3-inch HD touchscreen with 1280 x 720p resolution thanks to Sony's Bravia Engine. This device will also likely feature a 1.5 GHz dual-core processor and possibly Android Ice Cream Sandwhich, although it is unlikely depending on what time it is released.
Unwired View, Sony Ericsson working on Xperia Arc HD with 720p HD display?
