Windows with SDK v3.1 October 1991 Technical Preview

It is an pre-release version of Windows 3.1 Test Release (January 1992 Edition) presented in the Microsoft DevWorld from October 1991.

Diferences with the final version
See: Windows with SDK v3.1 October 1991 Technical Preview/Differences with the final version

Features

 * Earlier version of the Windows 3.1 Test Release (January 1992 Edition) browser
 * Visual Basic 1.0 SDK (A pre-release version, probably the Beta version)
 * More options in the Control Panel:
 * Color palette manager
 * Development
 * Sounds
 * Screen properaties (Similar to Windows NT 3.1)
 * "Sepound" (Professional sound maker and editor)
 * Very eralier version of the Visual Basic SDK Add-ons
 * System sounds enabled by default
 * "Sepdeo" (Professional video maker and editor)
 * Sprites Kit (For make sprites sheets)
 * Early and different version of the final Windows 3.1 Test Release (January 1992 Edition) and Windows 3.1 logo