Stacie from the Google News team posted in the Google News Help forum that Google News publishers now have a new way to submit their Google News Editors Pick feed to the Google News team. They can now submit it via the Google News Publisher Center.
To do so, you go to the Google News Publisher Center and click on "Sections" button on the source you want to manage. Then at the top of the page is a link to "Add Editors. Picks":
Click it and then add your URL of your Editors’ Picks feed.
Stacie added:
If there are issues with your feed, a message will appear explaining the error. Otherwise, your feed will be saved and sent to our team for final review.If your feed meets our technical and quality guidelines, we will start crawling your feed. Please note, pending our own quality measure and user feedback, we may re-review or disable your feed at any time.
For more on Google News Editors Pick, see this page.
Forum discussion at Google News Help.