On Macintosh accuracy:
- introduces video-motivated memory access delays, improving speed accuracy;
- makes the IWM's windowing logic much more like that described in its patent;
- reworks address decoding logic, yielding a small speed improvement and eliminating a small number of address space mapping errors; and
- improves 68000 behaviour re: interrupt acknowledgement, timing of interrupt decisions, and DIVS timing.
On usability:
- introduces activity indicators for the Mac floppy drives;
- provides on-screen exposition as to how to release your mouse cursor; and
- following user feedback, the Cocoa version of Clock Signal now shows the File -> Open... dialogue at launch.