Here is a list of links or documents with updated rugby rules: as of Aug 2012

U9s http://www.rfu.com/managingrugby/~/media/Files/2012/ManagingRugby/new_rules_of_play/Under%209.ashx
U8s http://www.rfu.com/managingrugby/~/media/Files/2012/ManagingRugby/new_rules_of_play/Under_8_V2.ashx
U7s and U6s
http://www.rfu.com/managingrugby/~/media/Files/2012/ManagingRugby/new_rules_of_play/Under%207.ashx