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Timeline of the Macintosh Operating System
| Version: |
Released: |
CPU Release: |
| Mac System Software |
January 24th, 1984 |
Macintosh |
| Mac System Software 0.1 |
1984 |
N/A |
| Mac System Software 0.3 |
1984 |
N/A |
| Mac System Software 0.5 |
summer 1984 |
N/A |
| Mac System Software 0.7 |
September 10th, 1984 |
Macintosh 512k |
| System Software 1.0 |
January 1986 |
Macintosh Plus |
| System Software 1.1 |
April 14th, 1986 |
Macintosh 512ke |
| System Software 2.0 |
March 2nd, 1987 |
Macintosh II & Macintosh SE |
| System Software 2.0.1 |
March 1987 |
N/A |
| System Software 5.0 |
October 1987 |
N/A |
| System Software 5.1 |
November 1987 |
N/A |
| System Software 6.0 |
1988 |
N/A |
| System Software 6.0.1 |
September 19th, 1988 |
Macintosh IIx |
| System Software 6.0.2 |
late 1988 |
N/A |
| System Software 6.0.3 |
March 7th, 1989 |
Macintosh IIcx |
| System Software 6.0.4 |
September 20th, 1989 |
Mac IIci & Mac Portable |
| System Software 6.0.5 |
March 19th, 1990 |
Macintosh IIfx |
| System Software 6.0.7 |
October 15th, 1990 |
Mac Classic, Mac LC, Mac IIsi |
| System Software 6.0.8 |
late 1990 |
N/A |
| System Software 7.0 |
early 1991 |
N/A |
| System Software 7.0.1 |
October 1991 |
Quadra 700/900, PowerBook 100/140/170 |
| System Software 7.0.1P |
March 1992 |
Performa 400 |
| System Software 7.1 |
August 1992 |
N/A |
| System Software 7.1P |
early 1993 |
N/A |
| System Software 7.1.1 (Pro) |
October 1993 |
N/A |
| System Software 7.1.1 |
October 1993 |
PowerBook Duo 250/270, PowerBook 520 |
| System Software 7.1.2 |
March 1994 |
PowerMac 6100/7100/8100 |
| System Software 7.1.2P |
July 1994 |
Quadra 630 |
| System Software 7.5 |
1995 |
N/A |
| System Software 7.5.1 |
March 1995 |
N/A |
| System Software 7.5.2 |
August 1995 |
N/A |
| System Software 7.5.3 |
January 1996 |
N/A |
| System Software 7.5.3, Revision 2 |
May 1st, 1996 |
N/A |
| System Software 7.5.3, Revision 2.1 |
August 7th, 1996 |
Performa 6400 |
| System Software 7.5.3, Revision 2.2 |
August 7th, 1996 |
PowerMac 9500/200, Performa 6360 |
| System Software 7.5.5 |
September 27th, 1996 |
N/A |
| System Software 7.6 |
January 7th, 1997 |
N/A |
| System Software 7.6.1 |
April 7th, 1997 |
N/A |
| MacOS 8.0 |
July 22nd, 1997 |
N/A |
| MacOS 8.1 |
late 1997 |
N/A |
| MacOS 8.5 |
October 15th, 1998 |
N/A |
| MacOS 8.6 |
May 8th, 1999 |
PowerMac G3/450 (Blue & White), PowerBook G3 (Bronze Keyboard) |
| MacOS 9.0 |
November 5th, 1999 |
N/A |
| MacOS 9.0.4 |
April 4th, 2000 |
N/A |
| MacOS X Public Beta |
September 12th, 2000 |
N/A |
| MacOS 9.1 |
January 9th, 2001 |
PowerMac G4 Digital Audio, PowerBook G4 |
| MacOS X 10.0 |
March 24th, 2001 |
N/A |
| MacOS X 10.0.1 |
April 16th, 2001 |
N/A |
| MacOS X 10.0.2 |
May 1st, 2001 |
N/A |
| MacOS X 10.0.3 |
May 9th, 2001 |
N/A |
| MacOS X 10.0.4 |
June 21st, 2001 |
N/A |
| MacOS 9.2 |
July 18th, 2001 |
PowerMac G4 Quick Silver |
| MacOS 9.2.1 |
August 20th, 2001 |
N/A |
| MacOS X 10.1 |
September 25th, 2001 |
N/A |
| MacOS X 10.1.1 |
November 13th, 2001 |
N/A |
| MacOS 9.2.2 |
December 5th, 2001 |
N/A |
| MacOS X 10.1.2 |
December 20th, 2001 |
N/A |
| MacOS X 10.1.3 |
February 19th, 2002 |
N/A |
| MacOS X 10.1.4 |
April 17th, 2002 |
N/A |
| MacOS X 10.1.5 |
June 4th, 2002 |
N/A |
| MacOS X 10.2 |
July 17th, 2002 |
iMac (17" display) |
| MacOS X 10.2.1 |
September 18th, 2002 |
N/A |
| MacOS X 10.2.2 |
November 11th, 2002 |
N/A |
| MacOS X 10.2.3 |
December 19th, 2002 |
N/A |
| MacOS X 10.2.4 |
January 7th, 2003 |
PowerBook G4 (12-inch), PowerBook G4 (17-inch) |
| MacOS X 10.2.5 |
April 10th, 2003 |
N/A |
| MacOS X 10.2.6 |
May 6th, 2003 |
eMac (ATI Graphics) |
| MacOS X 10.2.7 (for Power Macintosh G5) |
September 2003 |
Power Macintosh G5 |
| MacOS X 10.2.7 (for PowerPC G3/G4) |
September 8th, 2003 |
iMac (USB 2.0) |
| MacOS X 10.2.7 (for PowerBook G4) |
September 16th, 2003 |
PowerBook G4 (12-inch DVI), PowerBook G4 (15-inch FW 800), PowerBook G4 (17-inch 1.33 GHz) |
| MacOS X 10.2.8 |
September 22nd, 2003 |
N/A |
| MacOS X 10.3 |
October 24th, 2003 |
N/A |
| MacOS X 10.3.1 |
November 10th, 2003 |
N/A |
| MacOS X 10.3.2 |
December 17th, 2003 |
N/A |
| MacOS X 10.3.3 |
March 15th, 2004 |
N/A |
| MacOS X 10.3.4 |
May 26th, 2004 |
N/A |
| MacOS X 10.3.5 |
August 9th, 2004 |
N/A |
| MacOS X 10.3.6 |
November 5th, 2004 |
N/A |
| MacOS X 10.3.7 |
December 15th, 2004 |
N/A |
| MacOS X 10.3.8 |
February 9th, 2005 |
N/A |
| MacOS X 10.3.9 |
April 15th, 2005 |
N/A |
| MacOS X 10.4 |
April 29th, 2005 |
N/A |
| MacOS X 10.4.1 |
May 16th, 2005 |
N/A |
| MacOS X 10.4.2 |
July 12th, 2005 |
N/A |
| MacOS X 10.4.3 |
October 31st, 2005 |
N/A |
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