A new music phone has been announced by Sony Ericsson, joining the high-end line. The W705 looks kinda bulky, though it’s only 14mm think and weights 98 grams and has a slider form-factor.

There are a lot of useful features included in this cellphone, especially the WiFi, wich makes the Youtube service, music download and picture blogging much better to use.

The W705 also features 3G, a 3.2 megapixel camera and a front video call camera, Walkman 3.0, and FM RDS. It’s battery can live for 10 hours in talk time and 400 hours in standby mode.

We shall se the W705 in stores In Jan 2009, but we don’t know it’s price for the moment.