There are no plans to provide an English version at this time.
Support for the English version will depend on sales in Japan.
◆How to play the old version
You can play the old version by following these steps.
1. Select "Surveillance" from your Steam library.
2. Click the gear icon in the top right and select "Properties" at the bottom.
3. Select the "Beta" tab and select "Legacy - 旧バージョン" from the drop-down list in the top right.