# What's New

> This document records feature updates and bug fixes for the Luxsin B9 controller. Entries are listed in reverse chronological order — the newest release appears first.

## v2026.08.17

### Changes
- Removed the "Legacy version" entry from the home page. The legacy Web UI is no longer being updated or maintained — please use this new Web UI for the best experience.

## v2026.08.06

### New Features
- Added a "What's New" entry on the home page, allowing you to view release notes online.
- Added Undo support on the EQ page: tap the Undo button to revert your most recent change. It covers band parameter edits (frequency / gain / Q / filter type), slider drag adjustments, preamp and auto-preamp changes, A/B mode copy & switch, and batch edits. Each undo shows a toast describing exactly what was reverted (e.g. "A Band 3 GAIN +2.0 → 0.0").