Vivo may have planned to update the Xplay 5, a high-end smartphone introduced in March of this year as a direct Galaxy S7 edge competitor. The Xplay 6 may feature a bigger battery and an up to date processor but keep its curved display.
http://www.notebookcheck.net/Vivo-may-launch-the-Samsung-Galaxy-S7-edge-lookalike-Xplay6-soon.182755.0.html