Did mystic vision moved form 8 hr to 4 hrs?

[D_DI]

Temporary Mystic Vision Change (June/July, 2021)

We will be testing a shorter cooldown for Mystic Vision. This change will be scheduled to run: 2021-06-04T08:00:00Z (UTC) → 2021-07-12T08:00:00Z (UTC). The cooldown time will be reduced from 8 hours to 4 hours. Do note that during this temporary change the drop rates from Mystic Vision have not been changed.