The countdown has already started on Sony Ericsson's site. The website advertising the coming of the new Walkman model is not as spectacular as Nokia's latest campaign site, but at least it has a detailed history of Walkmans. The countdown ends on July 22 at 10 AM, that's when W302, W595 and W902 (which are already known in detail) are announced officially, while the W707 clamshell, developed under the name Alicia, will probably never get launched. Further details are available on Sony Ericsson's site at this link.