Starting in Gen V, Baton Pass no longer passes the effect of trapping moves such as Mean Look.
Baton Pass, Volt Switch, and U-turn are not blocked by trapping effects (this is not mentioned in their current descriptions).
10,000,000 Volt Thunderbolt has a +2 stage critical hit ratio, or 1/2, not 1/8.
Starting in Gen V, Protect, Detect, Endure, Spiky Shield, and King's Shield all have a priority of +4 instead +3.
When used consecutively, Protect's chance of success decreases by 1/3, not 1/2, to a minimum of 1/729 (starting in Gen VI).
King's Shield, Spiky Shield, and Baneful Bunker all decrease the chance of Protect to fail in addition to the currently listed moves.