With a 3.2" capacitive touch screen and a resolution of 320 x 480 pixels, the Live with Walkman comes in a little bigger than the Xperia minis and the Xperia active. Apart from that, internals are practically identical with a 1GHz processor, 5MP camera with autofocus and LED flash. An additional feature found on the Walkman phone is a physical Walkman button on the top side of the phone, taking you straight through to the music player. The handset also has improved stereo quality speakers on board with xLOUD, Sony Ericsson's volume enhancement system for mobile (also present on the Xperia minis).
The Walkman player also handles music in a more customizable way than the native music player and does it all with slick, bespoke visuals. Walkman integration aside, the UI is the same as that found on the Sony Ericsson Xperia mini with the four corners of the screen each accommodating a number of customizable shortcuts to apps. Naturally, there's also full access to all the Android Market apps, so you'll have plenty of customizability to hand. It should be out in the next few months so keep an eye on PhoneArena for a full in-depth review of the Sony Ericsson Live with Walkman.
Sony Ericsson Live with Walkman Demonstration: