Since PHP 7.0 was officially released today, we would not recommend running it on a production site, but Wordfence will most likely work with it. We will do more testing soon. If you have a development server that you plan to try it on, we will certainly welcome any bug reports.
-Matt R
I have upgraded a few sites to PHP7, and haven’t experienced any issues with WordFence. Its not a thorough test, but I completed a WordFence scan, and have tested performance with and without the falcon engine – no problems.
@netbjarne: Great, thank you for the input!
-Matt R