Forge 1.20.1 1.1.7-beta1

• Version: 1.1.7-beta1
• Target: Forge 1.20.1
• Type: Beta test build
• Release-preparation date: 2026-08-07
• Previous release baseline: 1.1.6-patch2

Release delta since the previous release

The Forge 1.20.1 first-parent delta contains 188 mainline commits after the baseline, bringing the mainline experience, Forge compatibility, and durable-task fixes together.

Player-visible changes

• Ported the 1.1.7 UI, area-destruction outlines/hover feedback, Quick Build interaction, and Create/Flywheel/offscreen-preview compatibility improvements.
• Fixed Forge-line issues around oversized-task persistence, undo stability, hidden workflow capacity, and rotation/preview state.
• Area destruction still waits when resources are unavailable, but a later mining replacement action now cancels the old real task instead of allowing it to resume and destroy the old area.
• The opening notice, AI guide, and technical appendix now describe Forge 1.20.1 specifically and name 1.1.6-patch2 as the rollback path.

Technical and compatibility notes

• The tutorial now covers Storage binding read/write versus extract-only access, Range binding, and UI theme changes. The in-game AI and local versioned appendices also document the client → network → server → task/persistence chain, client/server log boundaries, and trace-based analysis. Normal how-to answers stay brief; recent logs are used for bug diagnosis.

• A replacement cancels only non-terminal MINING and area-destruction DESTRUCTION tasks for the current player and dimension; PLACE, QUICK_BUILD, and BLUEPRINT_BUILD are outside the scope.

• RtsTaskEngine.cancelWorkflowTask(...) is the single cancellation path: it writes CANCELLED, releases leases, preserves cursor/succeeded, writes a tombstone, closes the workflow, and prevents durable projection restoration.

• Without a replacement action, WAITING_RESOURCE remains resumable after the tool/resources recover.

• Back up before this Beta. If unstable, return to 1.1.6-patch2; multiplayer clients and servers should use the same version.

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