update notification for old ipad 4th gen

an upcoming issue?? how can they forsee the issue if the ipad was on the previous ios 10.3.3 and no one has been updating past that why would our ios environment change for an issue to occur, im not very computer technical so i may not understand your answer anyways but just thought i would try to understand thanks for your time

I'm in no way being ungrateful at all, was just confused and may not be very computer smart but was just confused after stopping updates so long ago i wanted to check this was real and not my ipad being hacked or something..I am always greatful when i can update or better my security in any circumstance and didnt stop buying apple devices when they stopped updating i have a newer ipad air and ipad pro and a macbook and macbook air and my phone is an apple iph xs and i have apple tv so i'm a huge apple person and in no way ungrateful i'm not sure how i came across like that.. but anyways thanks for your time and hopefully i can get more educted on how these things work technically and better my understanding...

Hi thanks for your reply, Neil previously sent me a link in which detailed why and how the update has come about but thank you for your answer and i know that being hacked isnt possible presently for my up to date devices but for some reason i figured the reason we have updates is for security measures and i assume they are updated as apple get notification that some hackers or bugs have infiltrated or bypassed our security measures and thats why we must stay on top of our updates and since the older ipads stopped updating past ios 10 (or 9 for some) i just asdumed it might be possible since running these old ios that a hacker might be able to infiltrate by some means be it in our emails links or web pages that we visit since our ios is old and there would be more advanced ways hackers or bugs can effect the device as such but thanks for clarifying that i don’t ever have to worry at all..this gives me one less worry and one more piece of educated information

thankyou for that link it provided the answer i was looking for and it made sense in laymens terms..i appreciate your time and your effort in pointing me in the exact direction i needed..