Currently, according to our editor analytics statistics, the percentage of scripts created in the three languages break down like this:
This means that, as so few people use Boo, and the resources required to support it in the docs are not negligible, we’ve decided to drop support for Boo documentation for the Unity 5.0 release and use our resources in a more constructive way.
When Unity 5.0 launches, we will also drop “Create Boo Script” from the menu. That said, and very importantly, if your project contains Boo scripts, they will still work just as before.
We have listened to your feedback, and what you’ve been telling us that you really want from your documentation is C# examples across the board. As a consequence, we’re also moving internally to provide the best support for C# that we can.
Thus, many of the C# examples you’ve been requesting are now live, and even more will be ready when Unity 5.0 comes out. W00t!