Samsung’s Lollipop update is starting to roll out for the A7. The update is starting to happen on Russia and will be transfered later on to other countries.
It includes the 5.0.2 Android Lollipop operating system with improved battery life, material design, better performance and including a new TouchWiz UX.
The update for the Galaxy A7 is also available via OTA and via Kies. If you live in Russia and don’t want to do it manually, you’re probably getting the notification very soon. The rest of world should be getting the update very soon if everything goes well.
If you don’t want to wait for the update you can do it manually by downloading the Russian ROM from this link and flash it via Odin.
(Warranty may be voided after action.)