Hi StanislavR,
Thank you for contacting the Intel community.
Please be noted that the life cycle is depending on its order volume. Hence, we do not have the estimated EOL.
You can subscribe to our customer notification mailing list at below link so that you can be notified when an Intel device is going to be discontinued.
How can I be notified when an Altera device is going to be discontinued?
However, a lifecycle of a new device (eg: new Max 10) should be about 10-15 years depending on its ordering volume.
Regards,
Fakhrul