On my second account I work towards reaching Valiant and the rarest resource for me is ISO.
I need it to level up champions in order not to have 30 minutes fights in Act 9.
As an additional source of ISO I considered updated Act 6. Now it has much better rewards, especially in terms of ISO.
If we look at preview for 6.2.1, it shows that 3 paths have 15 T6 ISO.
If we look at the map in preview, there are these ISO shown
However when I enter the quest ISO is replaced to T2 alpha and there is no such thing as T6 ISO anywhere on the map.
I am also auto-exploring Act 6 on my main account, including exploring some chapters. As I do not need any SO on main account, I did not notice if the real rewards correspond to shown. So I am not sure that updated rewards are really what you get.
It would be nice on Kabam side to check the rewards in Act 6.
