AT&T may have used the launch of the iPad to buy a last-minute extension of its iPhone exclusivity deal, BroadPoint AmTech analyst Brian Marshall claimed late Wednesday. He believed that AT&T cut its deal for $30 unlimited, contract-free iPad data in exchange for extending its sole rights to the iPhone in the US until 2011. The evidence was the purported rejection of a Verizon iPad deal that Marshall's sources had said was virtually certain.