Bat widths, misconduct and the Decision Review System are all subject to change from tomorrow after changes introduced by the International Cricket Council.
The changes will kick in when South Africa host Bangladesh and Pakistan and Sri Lanka meet in the United Arab Emirates in test series starting respectively in Potchefstroom and Abu Dhabi tomorrow night.
The most spectacular of the changes is that players can be sent off for misconduct, although how often that might happen in tests remains a moot point.
It will only apply to what are called Level 4 offences, serious misconduct such as threatening to assault an umpire, making inappropriate and deliberate physical contact with an umpire, physically assaulting a player or committing any ''act of violence''.
The width of bat edges is not restricted, as well as their thickness. Bat edges can't be more than 40mm thick, and the overall depth at 67mm. Umpires will have a bat gauge in their pockets to check any bats legality.