How do I find out when an update of Information Return System is released? Our applications are installed in a cloud environment and updates are processed by our cloud provider, so I don't have sufficient permissions to go to System / Update via Internet and see if anything is out there.

Is there an email list to which I can subscribe to be notified when an update is available? Is there a pre-determined schedule and if so, can someone provide a link for me? 

Thanks!