At some point X-Plane 12 will go on sale in early access, and Laminar said it will include an X-Plane 11 license (because 12 might be still pretty broken while in EA, so in the meantime you can enjoy 11) - source https://developer.x-plane.com/2022/05/x-plane-12-development...
So if you wait for Early Access you will get both 12 and 11 for the price of one.
After that, all minor 12.x updates will be free (they always have been) which means free updates for years to come (XP 11 was out for about 5 years for example)
So if you wait for Early Access you will get both 12 and 11 for the price of one.
After that, all minor 12.x updates will be free (they always have been) which means free updates for years to come (XP 11 was out for about 5 years for example)