With the first full operational day of the new Cingular quickly approaching, there are two Sony Ericsson phones, both higher end models that are supposted to be released in the very early days of the new company.

Does anyone know if the Z500 or s710 will be coming out at the same time, or which we should be seeing offered first?

Sony Ericsson makes some great phones, and both of these models go into new territory for their company, the Z500 is a flip and the s710 is a twist-type model.