I recently asked a question that was voted off-topic. This, and similar cases could be avoided if there were a description of blender-related off-topic questions in the help center (this is the first destination that is recommended by the site for info on the subject).
I see that similar attempts have been made in the past to make the help center more informative about undesirable blender-related questions, such as here and here. It looks like they were never implemented however.
Anyway, I wanted to suggest from my own experience, and for the benefit of future answer seekers, to include in the help center a sentence saying something along the lines of:
"Questions about unreleased versions of blender are off-topic".