AT&T's John Stankey at a New York City event today surprised the industry by revealing that the carrier's upgrade to HSPA+ will be much larger than expected. It plans to have 14.4Mbps access rolled out far enough on its network to reach 250 million subscribers by the end of 2010. The speed-up should roughly double the 7.2Mbps speeds on offer today and will usually involve just software upgrades for cell sites.
