Includes a generic PENALTY and/or Yellow Card rule <R110>:
Any ROBOT construction technique or element that is not in compliance with the
Robot Rules (Rule <R01> through Rule <R116>) must be rectified before a ROBOT
will be allowed to compete or continue competing. Any ROBOT used during a
MATCH when a Robot Rule violation is detected will automatically be assigned a
PENALTY and may receive a Yellow Card, depending on the severity of the
infraction (unless otherwise noted).
Update #8 is out.
http://www.usfirst.org/uploadedFiles/Community/FRC/FRC_Documents_and_Updates/2008_Assets/Team_Updates/Team%20Update%208.pdf
It has a few clarifications about robot setup at the beginning of a match and about legal robot construction. It also has information on the Norgren Pressure Regulators and updates to the inspection checklist.
Enjoy!
Any ROBOT construction technique or element that is not in compliance with the
Robot Rules (Rule <R01> through Rule <R116>) must be rectified before a ROBOT
will be allowed to compete or continue competing. Any ROBOT used during a
MATCH when a Robot Rule violation is detected will automatically be assigned a
PENALTY and may receive a Yellow Card, depending on the severity of the
infraction (unless otherwise noted).
Looks like a tipped robot (extending past 80") automatically subtracts ten points from their alliance’s score… To know for sure, I’ll wait for our question in Q&A to be answered. 
If tipped on its own, yes. If tipped by an opponent, I’d say no based on <G23>.
Even with an “oh snap we just tipped!” retraction of the robot inside the 80 inch mark?
That sounds like an iffy call. In the heat of battle, my adherence to rules says penalty. But the human part of me says not to penalize if it was safe and didn’t block traffic.
I’d personally think that if your 'bot tips over intentionally you’d be assessed a penalty but if it’s accidental then it’d be ok. But I dont really know…
According to this response in the Q&A and the update 2 revision to G36 (emphasis mine):
Rule <G36>
Disabled ROBOTS and PENALTIES – If a ROBOT becomes incapacitated (e.g. the ROBOT overturns and can not be righted, the battery falls out, etc.), it may be completely disabled by pressing the E-Stop Button in the corresponding Player Station. ROBOTS that are disabled in this manner can not incur further PENALTIES (e.g. can not receive a PENALTY for IMPEDING). Disabled ROBOTS may be pushed out of the path of travel without PENALTY.
I think the interpretation is that there will be no penalties if you disable your robot.