International cricket is set to witness a slew of changes in all three formats with amendments to rules coming into effect from Oct 1. One of those changes - the fielding side using two new balls per innings in ODIs - will be seen in the five-match series between India and England, beginning Oct 14.
http://ummid.com/news/2011/September/29.09.2011/new_rule_for_cricket.htm
http://ummid.com/news/2011/September/29.09.2011/new_rule_for_cricket.htm