Y-OS/Version History

* Inital release at the launch, announced in late-1995.
* Inital release of applications: Y-Data(group data), Y-Service(connection set of tools), Y-Schedule(calendar and to-do list), Y-Bench, Y-Jigsaw(puzzle picture game), Y-Number(number puzzle game), Y-Chess(chess game)
* Inital reelease of programs: Calculator, Paint, Notes, Card View, Audio Recorder, Audio Player, Address Book, Clipboard, Terminal, File Manager, Personal Use, PCs Accesibility, Video Message, Sync PCs, Preferences, Help & Info.
* Y-OS's unamed Internet Web Browser is based on Internet Explorer 3, it was replaced by Y-OS 2.0's Y-Connection (now Pipe Connect).
* Java applet support.
* TCP/IP, networking support, password crenditals manager.
* 67 Pack of Applications, Programs, Settings, and Preferences.
* Based RexU 1.0 and modified Unix kernel.

### Y-OS 2.0

*Released October 1997, support ended on May 2001*

* Added new applications: Y-Connection (Web browser and network manager), Y-Mail (Email client service), Y-Meeting (instant messaging and videoconferencing client), Y-Show (movie video player), Y-Beautiful (image organizer and management), Y-Memo (text editor), Y-Writing (basic word processor),

### Y-OS 2.1

*Released March 1998, support ended on August 2001*

* Added new applications: Y-Tune (music player), Y-Book (scrapbook and notetaking), Y-Network (internet access service), Y-Drive (disk management), Y-Office (office productivity suite).
* MP3 player support since 2.1 December 1998 Update.

### Y-OS 3.0

*Released March 1999, support ended on August 2002*

* USB robust support.
* Support more color screens up to 16.7M colors(24/32-bit color depth)
* Supports more screen resolutions up to 1440x768, with third-party drivers up to 2048x1536.

### Y-OS Quatro

*Released June 2000, support ended on November 2003*

* Based RexU 2.0 and modified Unix kernel.

### Y-OS Cinco

*Released November 2001, support ended on May 2005*

* New and modern-like UI, removal of Classic theme interface.
* New icons, preferences, kernels, and styles. Like Air, Slate, White, Flat, Edge, etc.
* Based on RexU 2.1 and modified Unix kernel.
* Windows Networking (Initally released on Premium Feature-On Pack, but was later added in 5.24 in 2002.)

### Y-OS Seis

*Released August 2003, support ended on February 2007*

### Y-OS Fresh

*Released May 2005, support ended on March 2010*

* Extended 5-year support OS until 2010.
* Improved USB support.
* Based RexU 3.0(3.1-3.4 on Y-OS 64) and modified Unix kernel.

### Y-OS 8

*Released September 2007, support ended on June 2012*

* Renamed Applications: YConnect,
* Based RexU 4.0 and modified Unix kernel.

### Y-OS 9

*Released April 2009, support ended on October 2014*

* More USB and Bluetooth enhancements.
* Inital released on smartphones and feature phones(on 8.56).

### Y-OS 10

*Released October 12, 2010, support ended on April 11, 2016*

### Y-OS Square

*Released May 15, 2012, support ended on November 2017*

* New and redesigned UI, remaining desktop interface.
* Support for ARM processors, while PowerPC processor is no longer supported.
* Quick Taskbar was replaced by Pinning Taskbar.
* Application Store for Y-OS (now known as Y-Applications).
* Based RexU 11 and modified Unix kernel.

### Y-OS Square X2.0

*Released July 9, 2013, support ended on January 2019*

* Based RexU 12 and modified Unix kernel.

### Y-System X3

*Released September 24, 2014, support ends September 2020.*

* A new version Rex-V and based on RexU V.
* New design, non-skewomorphic interface, theme, and user experience.