Thanks to the hard work of Nick Thomas and Lukas Blakk, today I can announce the availability of two new official releases of the XULRunner runtime and SDKs. XULRunner 1.9.0.12 is a maintenance release for the 1.9.0 branch (the code that matches Firefox 3.0.x). XULRunner 1.9.1 is the first official release of XULRunner on the 1.9.1 branch (which matches the code in Firefox 3.5.x). Unfortunately we’re not quite at the point of shipping XULRunner releases at the same time as Firefox 3.5.x releases, but we should have a 1.9.1.1 release soon.

• XULRunner 1.9.0.12 (release notes)
  • Windows runtime
  • Mac OSX runtime
  • Linux runtime
  • Gecko SDK
  • Source code
• XULRunner 1.9.1(release notes)
  • Windows runtime
  • Mac OSX runtime
  • Linux runtime
  • Gecko SDK
  • Source code