 |
 |  | Aug 85 | IBM and Microsoft sign the development agreement
|
| | Apr 87 | OS/2 1.0 announced as a text-mode operating system
|
| | 31 Oct 88 | OS/2 1.10 is released |
| | 89 | OS/2 1.10 Extended Edition is released
|
| | Oct 89 | OS/2 1.20 is released (incl. OS/2 1.20 Standard Edition and OS/2 1.20 Extended Edition)
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| | Dec 90 | OS/2 1.30 is released (incl. OS/2 1.30 Standard Edition, OS/2 1.30 Extended Edition and Microsoft OS/2 1.30.1)
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| | Mar 92 | OS/2 2 is released |
| | May 93 | OS/2 2.1 is released |
| | Feb 94 | OS/2 2.11 is released |
| | Jun 94 | OS/2 For Symmetrical Multiprocessing 2.11 is released
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| | Oct 94 | OS/2 Warp 3 is released |
| | May 95 | OS/2 Warp 3.0 Connect is released
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| | Sep 96 | OS/2 Warp 4 is released |
| | 99 | OS/2 Warp 4.5 is released |
| | 00 | OS/2 Warp 4.51 is released |
| | 29 Sep 00 | eComStation Preview is released
|
| | 01 | Serenity Systems starts reselling OS/2, calling it eComStation
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| | 10 Jul 01 | eComStation 1.0 is released |
| | 02 | OS/2 Warp 4.52 is released
|
| | 18 Apr 03 | eComStation 1.1 is released
|
| | 18 Dec 04 | eComStation 1.2 is released |
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