Windows 3.0 RC6

Windows 3.0 RC6 is a Release Candidate build of Windows 3.0, scene leaked at some point in early 1990. It resurfaced on 2015-06-02, thanks to Overdoze. It was mistakenly labeled as the RTM version ("Production release") by whoever leaked it originally. However, this build is 1-2 months earlier than the RTM and has several differences in file sizes.