Thanks to its TENAA certification in China, we can tell you that the Lenovo A6600 is equipped with a 5-inch screen carrying a 720 x 1280 resolution. Under the hood is a 64-bit MediaTek SoC featuring a quad-core 1.5GHz CPU. 1GB of DDR3 RAM is inside along with 8GB of native storage. Those requiring more memory can access the 32GB capacity microSD slot. Back and front-facing cameras weigh in at 8MP and 5MP respectively, and Android 4.4.4 is pre-installed. The handset offers 4G LTE connectivity, and at 7.5mm it has a trim design.
The Lenovo A6600 is expected to be priced at the equivalent of $110 USD. The phone will be available in white, silver and gold. And yes, Lenovo does plan on updating the handset to Android 5.0.
source: TENAA via TechGadgetsz