Version	Changes	Date	Status	Download
4.1.2	changes	2011-11-02	Stable	6.1 MB
4.1.1	changes	2011-10-03	Stable	6.1 MB
4.1.0	changes	2011-09-08	Beta	5.8 MB
4.0.5	changes	2011-03-23	Stable	5.7 MB
4.0.4	changes	2011-03-12	Stable	5.7 MB
4.0.3	changes	2010-12-24	Stable	5.6 MB
4.0.2-beta	changes	2010-12-11	Beta	5.6 MB
4.0.1-beta	changes	2010-10-17	Beta	5.6 MB
4.0.0-alpha	changes	2010-07-27	Alpha	5.6 MB
3.3.3	changes	2009-12-15	Stable	4.7 MB
3.3.2	"Venice"	2009-11-09	Stable	4.6 MB
3.3.1	"Los Angeles"	2009-08-08	Stable	4.4 MB
3.3.0-rc1	"Marina del Rey"	2009-07-12	RC-1	4.3 MB
3.2.0-beta	"Woodland Hills"	2009-05-27	Depreciated	4 224 kB
3.1.0-beta	"Tilqi"	2009-03-23	Depreciated	4 136 kB
3.0.0-alpha	Alpha sneak peek	2009-01-27	Obsolete.	3 902 kB
2.4.7	"Tilman"	2009-05-27	Stable	3 527 kB
2.4.6	"New Year"	2009-01-12	Stable	3 478 kB
2.4.5	"Monument Valley"	2008-09-17	Stable	3 459 kB
2.4.2	"Palms"	2008-04-27	Obsolete.	2 865 kB
2.4.1	"Nevada"	2008-03-16	Obsolete.	2 677 kB
2.4.0-rc2	"Venetian"	2008-01-23	Obsolete.	2 848 kB
2.3.0-rc1	"Renaissance"	2007-12-28	Obsolete.	2 718 kB
2.2.0-beta	"Vegas Again"	2007-12-01	Obsolete.	2 564 kB
2.1.0-beta	"Las Vegas"	2007-11-04	Obsolete.	2 540 kB
2.0.2-alpha	"Millenium Park"	2007-10-11	Obsolete.	2 555 kB
2.0.1-alpha	"Navy Pier"	2007-09-18	Obsolete.	2 382 kB
2.0.0-alpha	"Chicago"	2007-09-08	Obsolete.	2 084 kB
1.10.3	"Key West"	2007-11-01	Obsolete.	2 488 kB
1.10.2	"Florida"	2007-06-08	Obsolete.	2 497 kB
1.10.1	"Orlando"	2007-05-26	Obsolete.	2 496 kB
1.10.0	"Miami"	2007-05-02	Obsolete.	2 621 kB
1.9.3	"Rainforest"	2007-03-10	Obsolete.	2 256 kB
1.9.2	"Kyoto"	2007-01-22	Obsolete.	2 256 kB
1.9.1 beta	"Chris"	2006-12-02	Obsolete.	2 244 kB
1.9 beta	"Casino Royale"	2006-11-25	Obsolete.	2 238 kB
1.8.7	"Tokyo"	2007-01-22	Obsolete.	2 168 kB
1.8.6	"Anne"	2006-12-01	Obsolete.	2 168 kB
1.8.5	"Oktoberfest"	2006-11-05	Obsolete.	2 165 kB
1.8.2	"Serenity"	2006-09-20	Obsolete.	2 165 kB
1.8.1 RC	"Milestone"	2006-08-17	Obsolete.	2 164 kB
1.8 beta	"Summer Beta"	2006-07-09	Obsolete.	2 137 kB
1.6 alpha	"Phoenix Alpha"	2005-11-25	Obsolete.	2 099 kB
0.9.2	"Sparkle"	2006-05-22	Obsolete.	3 218 kB
0.9.1	"Dawn"	2005-09-16	Obsolete.	2 858 kB
0.9.0.12	"Amsterdam"	2005-05-06	Obsolete.	2 791 kB
0.9.0.11	"Paris"	2004-09-22	Obsolete.	2 210 kB
0.9.0.10	"Copenhagen"	2004-07-09	Obsolete.	1 981 kB
0.9.0.9	"Madrid"	2004-07-03	Obsolete.	1 936 kB
0.9.0.8	"Oslo"	2004-06-14	Obsolete.	1 732 kB
0.9.0.5	"Berlin"	2004-05-29	Obsolete.	1 657 kB
0.9.0.3	"Europe"	2004-05-17	Obsolete.	1 385 kB
0.8.9	"Spring"	2004-04-08	Obsolete.	1 111 kB
0.8.7	"Cream"	2004-03-10	Obsolete.	892 kB
0.8.6.2	"Snow"	2004-01-14	Obsolete.	825 kB
0.8.6.1	"Lightning"	2003-11-06	Obsolete.	781 kB
0.8.6	"Thunder"	2003-09-26	Obsolete.	687 kB

Version numbers

Version numbers mostly reflect how much change the underlying code has undergone since the previous releases. See Roadmap & Unified Process. Version numbers do not really reflect how many new features may or may not be available. Please refer to the following table for more information about each release.

Stability

We use the following indicators:

• Alpha: Consider it as a demo release. Do not run on production.
• Beta: The version is usable. Only run on production if you're ready to apply PHP patches by hand. Occasionnally, a beta may prove stable and not require any patching at all. ;)
• Release Candidate (RC): There may be remaining minor bugs but nothing bad. It is safe to run on production.
• No special label: This is considered a stable release.

We do our best to release the most stable possible versions. However, no one is getting paid for doing Quality Assurance, so problems may arise after release time. The level of stability for each version will be reported in the table below. Look for the green checks .