## Client and launcher 0.5.121
- BH 1.9.10-b3.1 with C9 modules and the existing C9 loot filter.
- NUM1–6 toggle lighting, weather removal, Infravision, map reveal, navigation and monsters. Preferences persist between launches. New profiles default to off; existing preferences and custom hotkeys are preserved.
- C9Vault timing fix: computer clock differences no longer incorrectly expire stash responses, for tabs I–VIII and M.
- Corrected stash button and dimmed material colors when changing acts.
## Build Lab — beta
Armory import, equipment, rolls, skills, tooltips, A/B comparison and 5 named loadouts. Private plans and revocable sharing links after signing in. Calculations are partial: this is not a complete DPS simulator or a wardrobe that moves in-game items.
## TZ rotation
From September 8 at 00:00 Polish time: 15 groups — Chaos Sanctuary, cows, Catacombs/Andariel, WSK/Baal, Tal Rasha tombs, Pit, Ancient Tunnels, Travincal, Durance/Mephisto, Pindle/Nihlathak, Shenk/Eldritch, Stony Tomb, River of Flame, Flayer Jungle and Arcane Sanctuary. The calendar shows full groups and upcoming times; existing games retain their assigned zone.
Close every Diablo window and update through the launcher. This release is mandatory. No new items or recipes. Game tables and D2GS are unchanged; elemental splash and further D2R skill changes are a separate upcoming stage.