Seemly :
It isn't a big problem I am getting a new gaming laptop which will probably have pro 8.1. but I wanted to install windows 10 on this one so it doesn't really get outdated. is there is anything i can do about downloading iso? I am not really up to speak to anyone, I mean, windows 10 is free, so why don't they make public iso? they made technical preview iso so can't they do same for final release? (Also can I download technical preview then later upgrade to 10?)
1. No, it's not 'free'. You can upgrade for free from a qualifying Windows OS. Enterprise does not qualify.
2. You can only download the final release OS if you have a qualifying OS. See #1
3. The Tech Preview was 'free', so that people could evaluate and provide feedback. Is was never a 'free OS'.
4. If you install the Tech Preview now, it will roll over to the final release version on or after July 29. If you wish to continue using it...you must remain a participant in the Insider Program. Meaning you accept whatever updates and changes they want to push to your PC, whenever they want to push it.
In effect, you remain a permanent beta tester. I would not do this on a main PC.