I agree with Gabriel and IH.
I think the best scenario in cases like that where you can't test on the target OS is to make those releases "unofficial" and not "officially supported" and FREE. It would be unfair to your customers to do otherwise.
I think the best scenario in cases like that where you can't test on the target OS is to make those releases "unofficial" and not "officially supported" and FREE. It would be unfair to your customers to do otherwise.