If you’re interested in learning more about the “behind the scenes” of Moodle’s development then you may want to attend the next Developer Meeting. The meetings are held online (this one is at 8am EST on the 22nd of November) and this one will focus on the pending release of Moodle 2.2 (yet another reason to attend). No meeting room is yet announced but when it is you can find it here: http://docs.moodle.org/dev/Developer_meeting_November_2011.
See you there!
In other news: 2.2 is coming! It’s slated for a 12/1 release…until then you can drool over the specs at http://docs.moodle.org/dev/Roadmap#Version_2.2.