The original article about AT&T and Williams splitting came from Reuters. There is though an interesting part here …

"A team source said the AT&T deal had not been ‘sustainable’ at the existing level and Williams were now in advanced negotiations with another telecommunications company for the title sponsorship. No details were given."

Another telecommunications company for title sponsorship could be … Embratel, who sponsors Senna. Embratel is supporting Senna since 2006 (http://www.embratel.com.br/Embratel02/cda/portal/0,2997,PO_P_11258,00.html). Is this a sign on who gets the second seat?