Here you can find the documentation for the latest development version as well as recent releases of OpenMDAO.
Note that the latest development version is found on GitHub at https://github.com/OpenMDAO/OpenMDAO.
Installing via pip
will give you the most recent release.
latest    
Released on December 3, 20243.35.0    [Release Notes]
Released on October 1, 20243.34.0    [Release Notes]
Released on July 19, 20243.33.0    [Release Notes]
Released on June 7, 20243.32.0    [Release Notes]
Released on May 3, 20243.31.1    [Release Notes]
Released on March 15, 20243.31.0    [Release Notes]
Released on March 15, 20243.30.0    [Release Notes]
Released on December 7, 20233.29.0    [Release Notes]
Released on October 20, 20233.28.0    [Release Notes]
Released on August 30, 20233.27.0    [Release Notes]
Released on June 26, 20233.26.0    [Release Notes]
Released on April 14, 20233.25.0    [Release Notes]
Released on January 27, 20233.24.0    [Release Notes]
Released on January 25, 20233.23.0    [Release Notes]
Released on January 10, 20233.22.0    [Release Notes]
Released on May 2, 20243.21.0    [Release Notes]
Released on September 28, 20223.20.0    [Release Notes]
Released on August 10, 20223.19.0    [Release Notes]
Released on June 29, 20223.17.0    [Release Notes]
Released on March 21, 20223.16.0    [Release Notes]
Released on January 6, 20223.15.0    [Release Notes]
Released on November 24, 20213.14.0    [Release Notes]
Released on November 18, 20213.13.1    [Release Notes]
Released on October 14, 20213.13.0    [Release Notes]
Released on October 6, 20213.12.0    [Release Notes]
Released on September 15, 20213.11.0    [Release Notes]
Released on August 3, 20213.10.0    [Release Notes]
Released on July 14, 20213.9.2    [Release Notes]
Released on May 14, 20213.9.1    [Release Notes]
Released on May 4, 20213.9.0    [Release Notes]
Released on April 28, 20213.8.0    [Release Notes]
Released on March 16, 20213.7.0    [Release Notes]
Released on February 12, 20213.6.0    [Release Notes]
Released on January 15, 20213.5.0    [Release Notes]
Released on December 4, 20203.4.1    [Release Notes]
Released on November 13, 20203.4.0    [Release Notes]
Released on October 2, 20203.3.0    [Release Notes]
Released on September 4, 20203.2.1    [Release Notes]
Released on August 7, 20203.2.0    [Release Notes]
Released on July 21, 20203.1.1    [Release Notes]
Released on June 12, 20203.1.0    [Release Notes]
Released on May 1, 20203.0.0    [Release Notes]
Released on March 5, 2020