Beginning this year, Google posted on webmaster blog that they are rolling out the new search console, and every webmaster will get a message when their site is ready. Now all the sites are ready for the new Search Console. I got a mail yesterday:
I hope you have also got a mail from Google Search Console Team. If you haven’t received yet, you can go to https://search.google.com/search-console and choose your property from the menu at the top right corner. Later if you want you can switch to the old version of search console from left menu “Go to the old version”.