Microsoft today launched a new website covering the roadmap for Office 365, This is great, now you can see what new features and functionality has been launched, is rolling out and in development. One of the cool new features that is in the Rolling Out section is the ability to opt in to being the first to receive new features to Office 365:

As you can see this is tenant wide and you would receive new features approximately 2 weeks prior to general availability!

I just check and my Tenant had this feature deployed so I have opted in!

Read more about the site from the blog post announcing it,