Blizzard just released the details for the latest patch.
Patch Notes: https://hearthstone.blizzard.com/en-us/news/23934449/26-0-patch-notes
Timestamps
0:00 Expansion
3:02 Balance Changes
9:23 Battlegrounds
9:50 Duels
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News | Hearthstone | NEW PATCH!! Cards unbanned! Duels nerfs & buffs! Rotating card balance!