About the Beta

See the VirtualCast official blog for the detailed information. (The blog is only available in Japanese)
https://blog.virtualcast.jp/blog/2020/03/beta_release/

How to play the beta

  1. Launch Steam and from the Library open the [Property] for VirtualCast
  1. Select the [BETAS] tab
  2. From the [Select the beta you would like to opt into:] drop-down, select beta - (version)

How to revert to a stable version from a beta version

From the drop-down on the screenshot above, select [NONE - Opt out of all beta programs]