See all Xcode Releases and read the release notes in the app.
You have to open the app frequently that the push notifications are working.
Planned features:
โข Select if you want to get notified for only Release, only Beta or both
โข Push Notification shows which version appeared
โข Select Push Notification time
โข AppIcon Selection
The EULA license agreement is used: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/