When you receive a notification email from a discussion, you will now see (Discussion #xx) in the header, so you can more easily recognise and filter for emails that reference discussions.
READMEs for organization profiles
Organizations can now display a README.md on their profile Overview.
Start with creating a .github repository for the desired organization. Make sure it's public. Add a profile folder to your .github repository and add a README.md file to the profile folder.
The contents of your README.md file will appear on the Overview page of the organization, visible to everyone. For an example, see the GitHub Overview page or learn more in the documentation.