Why is there a "New" button next to the PM and Reports section of the main menu?

Like it says.  I see the new buttons next to PM and Reports, but I can't find a blog post or other explanation.  The one next to Settings also says "New" but that's been there for a while. 

It would be helpful to know what's new...

Thanks.

The answer, for those as clueless as me: go into these sections that say "new" then look around for a corresponding "new" button next to the new thing.