Sony has announced during the PlayStation Experience that an update to the Resident Evil 7 demo will be released in the coming hours that will allow you to enjoy it with PlayStation VR.
During the conference that took place just a few minutes ago, a new trailer for Resident Evil 7 Biohazard was shown in which it is also shown that the Banned Footage downloadable content will arrive first on PlayStation 4, so Sony will have the temporary exclusive with virtual reality support and this DLC.
https://www.youtube.com/watch?v=esgM0-3w1cU
In addition, the demo that is currently in the store will have an update that will allow it to be played with PlayStation VR on PlayStation 4 standard or PRO edition. No exact time has been communicated, only that it will arrive at night in the United States time.