I doubt it. One+ would have to build it for your device. They might do it, probably wouldn't be a bad idea if they did, but as of right now, I think the OS is just for the One+.
Found this:
Please note, OxygenOS only runs on a OnePlus One device, do not attempt to flash this on any other device.
https://forums.oneplus.net/threads/oxygenos-is-here-installation-guide.289398/