Patch 31.2 has arrived as promised [on time for foreign services, an hour later for national services]. As per usual, we’re going to take a look at the forward-looking content first, but the actual patch brings much more than that, see (ii) for more information on the appearance of the new content.
Constructed Mode
Card mechanic tweaks and bug fixes, including Figurative Hearthstone, have been implemented.
Mirage Mode is now available, and the “Miracle of Time” rule is now live.

Hearthstone Patch 31.2 Official Preview (I) Construct Updates New Gift Cards Phantasmagoria and More
Bennidge2024-12-03
wargame mode
The system feature “Heroic Rerolls” is now available, as well as wargame tokens, login rewards and store freebies.
System mechanics have been updated, trinket mechanics have been dropped, follower and spell pools have been adjusted, and hero updates such as Nubodon the Seer are now available.
Damage cap mechanic updates are now available.
Season updates, points reset, MMR has been regularized.
Wargame reward routes reset, new passes and pass+ now live.
Wargame Side Hero Selection now “shows” for free players!

Hearthstone Patch 31.2 Official Preview (II) Summary of Big Wargaming Updates Preview Info Gleaned
Bennidge2024-12-03
Arena
The season has been updated, the card pool has been rotated (the card selection rules remain the same), and the White Whore rewards have been settled.

Hearthstone Patch 31.2 Official Preview (III) Arena & More
Bennidge2024-12-03