We've talked about this in the past but I can't find an existing issue for it.

It seems to me that V4.0 is a reasonable point for us to stop distributing the TeamCity extension in the Msi. Jetbrains can make the extension available on nuget and chocolatey and provide instructions as to how to add it to an msi installation - we can even help with the last - but as previously decided, we should stop distributing an extension for a particular CI solution when we don't do that for any others.