WinUAE v2.3.1 Beta 4 is released. Winuae is the commodore amiga emulator for Windows. WinUAE is a mostly complete software emulation of the hardware of the Commodore Amiga 500/1000/2000. A Commodore Amiga, for those who don’t know, is a 16/32 bit computer system based on the Motorola 680×0 CPU and a few specially designed custom chips that provide very good graphics and sound capabilities. Its first incarnation, the A1000, appeared in 1985, followed by the highly successful A500 and A2000 models. WinUAE is a port of the originally written for Unixish systems UAE; but over time, it seems the Windows port, WinUAE has become the best version available on any platform. WinUAE is free software: you are welcome to distribute copies of it and/or modify it, under certain conditions. There is no warranty of any kind for UAE. For more details concerning these issues, please read the GNU General Public License, which describes the terms under which WinUAE is distributed.

WinUAE v2.3.1 Beta 4 changelog:
- automatically disable battery backed up clock when input recorder is enabled
- automatic resize didn't set "configuration changed" flag when window size changed, size timeout also changed to 10 frames (was 50)
- 2352 byte sector plain iso images didn't mount (misplaced parenthesis in mode test..)
- exception return address error in non-JIT fastest possible CPU modes (b1)
- increased MIDI sysex buffer size (16000 byte buffer is not large enough, some devices send about 18000 bytes)
- copy also log file (if enabled) when saving input recording
- clipboard sharing can be disabled (config file only)
- joystick/mouse button contact bounce is now off by default (config file only)
- Gayle ID update, 0xD1 (AA), 0xD0 (normal). Real A600/A1200 confirmed (unless there are other revisions)

Download:WinUAE v2.3.1 Beta 4
Source: Here