I currently have Visual Studio 2013 and 2015 RC installed on my PC. With Azure 2.6 I can see the new Microsoft Azure API Apps (Preview) when publishing.
Visual Studio 2013
On 2015 I don't see the option
Visual Studio 2015 RC Enterprise
Yet it looks like I have everything installed correctly
Is there anything else I need to do to get the publish option for API Apps?
If you have access to azure management portal, download a publish profile for the api you wish to publish. once downloaded, import the publish profile, it will automatically save the profile for the next publish too.