Added Key Width setting with PPI-based real-size key rendering (Default, Mini Size, Full Size). Added Bluetooth MIDI support. Reorganized MIDI menu with separate In/Out sections and disabled section labels. Reorganized XY Pad menu to group items by coordinate axis. Hidden MIDI menu when running as AUv3 since host handles MIDI routing.

Lowered upper panel height auto-hide threshold. Fixed AUv3 not restoring SF2 program from state. Fixed AUv3 unresponsive popup menu actions. Fixed AUv3 and standalone not responding to external MIDI input.

Added 3D wheel-style rendering for pitch bend and mod wheel sliders, with position-tracking gradient, sine-based bulge highlight, and variable-thickness handle line. Consolidated MIDI Channel and MIDI Out into a single MIDI submenu with disabled section labels for grouping. Fixed drum pad highlighting to toggle pad state instead of lighting up the MIDI keyboard. Fixed velocity 0 bug in height-based velocity mode. Clamped minimum velocity to 1/127 and velocity fader minimum to 1 to prevent Note Off messages.

Added SF2 multi-preset program selection with auto-scroll and state persistence. Added direct Remap to Mod Wheel and Remap to Pitch Wheel toggle items in aftertouch menu. Changed CC1 remap to use mod wheel position as bipolar center point instead of absolute values. Mod wheel slider now syncs to last aftertouch CC1 value on release for continuous expression. Renamed aftertouch remap info label to "Set to CC..." for clarity. Limited Set Remap dialog to CC 0-127 only since Pitch Wheel now has direct access. Fixed CC1 remap resetting mod wheel to zero when pressing a key.

New aftertouch menu with four modes: Off, Mono AT, Poly AT, and XY MPE. Mono AT supports first-mover leader direction locking for natural chord expression. XY MPE allocates per-note channels (2–16) with Y→CC74 and X→Pitch Bend. Bipolar Y-axis pressure mapping includes a deadzone for smooth control. Slide-to-play is automatically disabled when aftertouch is active, locking each finger to its original note. Includes aftertouch output remapping to any MIDI CC (0–127) or Pitch Bend via the new Set Remap dialog. Pressed keys display a green gradient that reflects aftertouch intensity in real time. Standalone state persistence now correctly preserves MIDI channel, output device, and all settings across sessions.

Moved Load Sound to top of popup menu for better discoverability. Consolidated X Pad CC and Y Pad CC into single XY Pad submenu. Shortened welcome dialog text to fit smaller screens. Disabled screen idle timer for standalone builds.

Added SFZ file loading. Increased max sound file size limit from 128 MB to 512 MB.

Built-in high-quality, low CPU sound engine: load SF2 SoundFonts, WAV, and M4A files to play sounds directly from KeyPad. Full AUv3 plugin support: use KeyPad as an Audio Unit instrument inside GarageBand, AUM, and other hosts. Extended MIDI keyboard range with additional mapped keys. Improved welcome screen with quick overview and setup guide links. Reliability fixes for CoreMIDI connections and sound file persistence across sessions.

Smoother, more responsive controls: pitch bend, drum pads, sustain pedal, and XY pad now respond instantly without any visual lag. Custom CC assignments: enter any MIDI CC number (1-128) for X and Y pad axes. Improved keyboard rendering with faster note highlighting and reduced battery usage. Fixed height-based velocity affecting output when turned off. Stability improvements and bug fixes.