AMD mining is still not dead even if the Bitmain E3 dominate the EThash mining. There are still other profitable coins to mine using AMD GPUs ,if you are a true miner you will not get panic about the release of Bitmain E3, algo switch to the rescue but it will take time to adjust and fine tuning to other algo. AMD GPUs is still more energy efficient compared to NVIDIA, so that's why we can not conclude that AMD mining will be out of the mining scene.