Today's Sony press conference is a biggie, and it's not just because this is the premier wireless tradeshow, or because the company is a household name. This will be the first time we've heard from Sony's phone division since Sony split with Ericsson and rebranded the operation "Sony Mobile Communications." But what's in a name, right? It's the gadgets we're after, and gadgets we'll see. So, will we get the Xperia U? A dash of