Bernd Schmidt is still developing the core of UAE.
Brian is progressing with:
The WinUAE code-base.
AHI - support.
Toni Wilen is working on the following:
Emulator state saving. Saves all memory, cpu state, custom chip state etc.. Useful for saving and loading games that do not have save function or uses strange save format. Supports only "plain" Amigas, no UAE extensions like harddisk-emulation or picasso emulation. This is complete and working but needs lots of code cleaning before it will be included with Winuae... He will do this when AGA is finished.
Action Replay 3 support is done. Unfortunately AR3 is badly programmed and only works correctly with kickstart 1.3 and approximately A500 speed. He also added support for HRTMon ("software action replay", works in AGA and fast processors).
Another fellow is working on SCSI implementation.
See About UAE for more information about the people behind UAE!
Possible features in future-versions of UAE:
AHI support, for true 16-bit multi-voice sound support inside WinUAE. Basically, whatever capabilities your Windows sound-card has would become available for AHI-compatible Amiga software within WinUAE.
Better AGA support, since the current implementation is a little bit slow, and somewhat limited.
The ability to save and load the complete state of the emulator, so that if the game-saving doesn't work (due to floppy-disk emulation problems), you will be able to just save a snapshot of the entire "Amiga" and resume your game at any time.
Asynchronous Picasso96 RTG support. Right now, when the "Amiga" calls a P96 routine to blit a rectangle, the ENTIRE emulation is stalled until the blit has been completed by DirectDraw.
Improved serial-support through a uaeser.device implementation.
Improved printer-support through a printer-driver on the "Amiga" which formats all printing as graphics and hands them across to the Windows printer-driver.
The ability to read/write Amiga SCSI or IDE hard-drives when connected to your PC. This would allow you to simply connect your Amiga's hard-drive to your PC and transfer across the contents.
Faster 680x0 emulation.
WarpOS API compatibility, so that an Amiga program with WarpOS (PowerPC) extensions could do a recompile for x86 and still use that extensibility.