[4] On July 23, 2007, as promised, John Lam and the DLR Design Team presented the pre-Alpha version of the IronRuby compiler at OSCON.

[5] On August 31, 2007, John Lam and the DLR Design Team released the code in its pre-alpha stage on RubyForge.

[6] The source code has continued to be updated regularly by the core Microsoft team (but not for every check-in).

The team also does not accept community contributions for the core Dynamic Language Runtime library, at least for now.

[7] On July 24, 2008, the IronRuby team released the first binary alpha version, in line with OSCON 2008.

[17][18] In July 2010, Microsoft let go Jimmy Schementi, one of two remaining members of the IronRuby core team, and stopped funding the project.

[34] IronRuby integrated RubySpec, which is a project to write a complete, executable specification for the Ruby programming language.