Officially Launched
Samsung to Update Galaxy A Series, Specs of Galaxy A3 & A7 Leaked

Samsung is said to be working on the successors for Galaxy A3, Galaxy A5, and Galaxy A7. Until now there was no information regarding the details of the three devices, but two new handsets with model numbers SM-A310 and SM-A710 are passed through the GFXBench benchmarking test. These devices are suggested to be the successors for earlier launched Galaxy A3 and Galaxy A7.
According to the GFXBench listing, the SM-A310 model comes with a slightly larger and better display than the original Galaxy A3, it sports a 4.7-inch display with HD resolution. The device is powered by Exynos 7580 quad-core processor clocked at 1.5GHz along with 1.5GB of RAM and 16GB of internal storage.
The device with model number SM-A710 is a mid-range device considering the specifications of the device. It has a bigger 5.5-inch Full HD display compared to the 5.2-inch display on the original Galaxy A7. The device comes with the same 64-bit Snapdragon 615 octa-core processor that also powered its predecessor. It has 3GB of RAM and 16GB of internal storage along with a microSD card slot for storage expansion.
On the camera front, both the devices sport 13MP rear camera with LED flash and a 5MP front-facing camera. The devices run on Android 5.1 Lollipop based TouchWiz UI. Last week the SM-A310 along with SM-A510 which is believed to be the successor for Galaxy A5 are imported to India from South Korea. The SM-510 device comes with 5.2-inch display we expect it to be of HD resolution. Since there is no word of confirmation from the company, take this with a pinch of salt. We can expect the devices to be launched in the next few weeks.