### Steps to reproduce

1. Navigate to community.openproject.org a few days before official release.

2. You will see the an info box displaying news about the upcoming release, which is already activated on Community.


### What is the buggy behavior?

* The link in the info box leads to a 404 page.


### What is the expected behavior? / Solutions

1. Begin of the deletion Proposal:

1. End of the deletion Add a release date to the application in `OpenProject::Version`. There is already the possibility to have a `RELEASE_DATE` file. We would need to add the expected release date to the file upon creation of the release branch. Begin of the insertion

End of the insertion Begin of the deletion

End of the deletion 2. If the release date is in the future, the info box on Community Begin of the insertionshouldEnd of the insertion Begin of the deletion before the official release shows a hint saying that the the release notes willEnd of the deletion be Begin of the insertionhidden


End of the insertion Begin of the deletion available on date XX.YY.ZZ


End of the deletion Other solutions might be possible.

### Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/200074/content">