There has been a recent update/clarification to the line-up procedures. This update is in reference to the new passing point system that will be in place for the 2013 season and relates to how a driver will "qualify" for the "A" Feature. You can find these updates/clarifications by clicking, or hovering, on the "Rules" tab above and then on the "General Rules." The updated rules are from rule #4 through #10.
There has also been a rule addition to the Factory Stock rules. A rule was added under the "Engine" rules to state the maximum compression allowed per cylinder. This new rule is now rule #2 and can be found by clicking, or hovering, on the "Rules" tab above and then on the "Factory Stock" tab.