This new gTLD is owned and operated by Google, and is akin to shortcut tools usually used within larger organisations. It is certainly something that is going to provide a lot of value for the internet community. As at the time of writing this registering a new domain will set you back A$720/year.
As an example if you were to put
repo.new as a URL within your browser it will take to you to GitHub
and step you through the process of creating a new repostiory.
There seem to be rather a few of these domains that have cropped up over recent times, below is a list of these that I find useful.
|Create a new GitHub repostiory
|Create a new Gist on GitHub
|Create a new Google Doc
|Create a new Google Deck
If you're interested in seeing a more exhaustive list of shortcuts available through this new
.new gTLD Google has gone and put that together: whats.new