Read the developer’s release notes
New Features
Artifact Upgrades up to Level 24,
Artifacts can now be upgraded beyond their previous limits, granting additional stats. Higher upgrade levels require Mithril, a new resource.
New Guild Boss: Prime Mechanicus,
A new daily Guild Boss that refreshes every 24 hours. It uses separate attack attempts, rewards Mithril, and can be challenged alongside the existing Guild Boss using decks already used against other bosses.
Expanded Guild Boss System,
Two Guild Bosses are now available to challenge each day. While rewards have been rebalanced between the two encounters, participating in both battles provides more total rewards than the previous Guild Boss system.
Improvements
Increased Hero Summon rates to 4% Legendary and 34% Epic.,
Increased the maximum number of saved decks from 5 to 10.,
Added Collect All Rewards buttons to multiple game windows.,
Reworked Faction Dungeon energy: each dungeon now has its own dedicated energy pool.,
Improved artifact set auto-equip and added n
Source: Apple App Store listing.