Open multiple Projects/Folders in Visual Studio Code

How do I open multiple projects/folders in a single Visual Studio Code instance, and open multiple files in single view? Does it has any option for future change request?

Not sure why the simplest solution is not mentioned. You can simply do File>New Window and open the other project in the new window.

Update

This is now available out of the box as of October 2017. From the blog post:

This was our #1 feature request - it's been a while coming but it's here now.

The complete documentation is here.

You can work with multiple project folders in Visual Studio Code with multi-root workspaces. This can be very helpful when you are working on several related projects at one time. For example, you might have a repository with a product's documentation which you like to keep current when you update the product source code.

Original answer

Currently the Insider channel of VSCode gives us this out of the box.

Read more from the blog post.