Even without a new UI, the current version provides many new features:

• Floppy LED (visible only with virtual keyboard)
• Virtual keyboard:
  • adjustable: position, size, transparency
  • persistent: saves position, size, transparency automatically (separately for portrait and landscape on Android and iOS)
  • visual und acoustic (switchable) feedback
• Virtual joystick in two different sizes
• Virtual mouse (selectable instead of joystick): AMX, Reisware/Gerdes or Symbiface II (PS/2)
• Original sounds of disk drive, cassette relay and keyboard (can be switched on and off)
• Zoom function (display without border), alternating with and without full screen; persistent (separately for portrait and landscape on Android and iOS)
• Audio emulation deeply revised; output quality significantly improved (you can select from 4 output frequencies)
• Vortex memory extension SP64...SP512
• Jarek memory extension 576KB...4096KB
• Bank-switching speed dramatically improved; correct emulation of C3 mode
• IPv6-enabled web server similar to M4 board (upload and download into/from the emulator via web interface)
• Autostart behaviour improved (automatic file selection and deactivation)
• Minimal audio latency on Android (Oboe)
• User interface improved on Android/iOS
• Setup settings are saved immediately
• First preparations for new user interface
• Adjusted to SDL version 2.0.22 (which needs to be installed manually on Linux)
• Fixed bugs: background-foreground-changing behaviour on Android, real-time speed, video output speed (in particular on Android, iOS and MacOS, I think also on the Raspberry Pi), memory leaks, M4 sockets, file access on Android and iOS

This release is also available in the Android Play Store.