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Growing demand for mobile data traffic is challenging even the capacities of next generation wireless networks. In response, operators worldwide are expanding and updating their deployment. In turn, 3GPP continues to explore ways to empower operators with features for more capable, economic, and energy-efficient networks. Toward 3GPP Release 12, focus has shifted to accommodate the inevitable traffic explosion in both magnitude and traffic types. In this work, we highlight some of the features of LTE-Advanced Release 12 relevant to improving quality of service. Specifically, we focus on solutions explored to enhance network capacity and service delivery in terms of offloading, improved services, and improved congestion control.