Thank you for contacting Intel Community. For your information, some of the Max 7000 devices are still available but they are not recommended for the new design. Although they are not be discontinued at this moment. Anyhow, the life cycle is depending on its order volume. You are recommended to use the newest CPLD devices for your design.
In the meantime, you can subscribe to our customer notification mailing list at the below link so that you can be notified when an Altera device is going to be discontinued.
Feel free to let me know if you need further assistance.