Good news, everyone! ...or at least, everyone with an international LG Optimus G and an inclination to try out custom ROM builds. The ubiquitous CyanogenMod ROM is now available for LG's flagship, beginning with nightly CM 10.1 (Android 4.2) builds. CyanogenMod developer Ricardo Cerqueira broke the news on his Google+ account, noting that the new builds are possible thanks to the FreeGee tool expanding to the international (E975) model.
As always, you'll need a custom recovery to apply the ROM, and ClockworkMod has also been ported from to the international Optimus G model. Nightly builds tend to be a little less stable as a general rule, but since the Optimus G already has a pretty healthy development community for other versions (not to mention a certain Nexus-flavored cousin) they should be relatively complete. Even so, more cautious users may want to wait for a beta or milestone build.
Remember that you'll need to flash Google Apps separately after installing CyanogenMod, and a backup never hurt anyone. Happy flashing.