Hi all,
Now all teams already use Java >= 8 in production, so it should be safe to use Java 8 features in your code. You can follow the guide at: https://29022131.atlassian.net/wiki/spaces/BE/pages/1396968108/Using+Java+8+Features+on+Your+Repository.
After this, you can also use newer versions of some libraries that don't support Java 7 anymore, for example: Guava. In the near future, Java 7 AMIs may be decommissioned too.
Thank you!