Apple IIGS Introduction (with GS/OS 1.0)

Apple officially introduced the Apple IIGS, the most powerful computer in the Apple II family, which came bundled with the first version of its new 16-bit graphical operating system, GS/OS 1.0.

Significance

This marked the first public availability of GS/OS, showcasing Apple's commitment to extending the Apple II line with modern GUI capabilities while maintaining backward compatibility.