Since triple-cam setups are becoming the norm, Samsung is upping the ante with rear quad-cam setups now. Surprisingly enough, the first quad-cam model will not be a high-end device, but a premium mid-range one powered by a Snapdragon 660 SoC coupled with 6 GB of RAM. This model should be officially unveiled on October 11.
https://www.notebookcheck.net/Samsung-Galaxy-A9-gets-leaked-Geekbench-results.337844.0.html