AT&T (T) on Wednesday laid out its investment blueprint for the coming years and it looks as though a lot more people in the United States are about to get access to LTE. Overall AT&T will invest $14 billion over the next three years on improvements to both its wireless and wireline networks, including an expansion of its LTE network to reach 300 million Americans by 2014. AT&T also plans on expanding its fiber network to reach “1 million additional business customer locations, covering 50 percent of multi-tenant office buildings in AT&T’s wireline service area by year-end 2015.”