Google released a new feature that will be popping up in your GMail compose screen sometime today. The new feature will give you a pop-up window instead of a new screen when composing an email. This pop-up window gives you all the features of the regular compose screen – adding CC, BCC, Attachments, deleting messages, etc. Plus, you can revert to the old compose screen if you like at anytime. Below is a vide tutorial on how to get started with this new feature or completely ignore it.