This paper provides a high-level overview of Long Term Evolution (LTE) Rel-10, sometimes referred to as LTE-Advanced. First, a brief overview of LTE and some of its technologies are given and then the International Mobile Telecommunications (IMT)-Advanced requirements are discussed. LTE Rel-10 enhances the LTE with carrier aggregation, improved multi-antenna support, relaying and improved support for heterogeneous deployments. The paper is concluded with measurements from the first commercial LTE network, showing that live LTE network performance is well aligned with expectations.